Windows Analysis Report SK TAX INV.exe

AV Detection:

Found malware configuration

Source: 0.2.SK TAX INV.exe.3b43e10.5.raw.unpack

Malware Configuration Extractor: NanoCore {"Version": "1.2.2.0", "Mutex": "f4157c11-54e5-4893-8a60-6856b847", "Group": "Default", "Domain1": "dera31.ddns.net", "Domain2": "195.133.18.211", "Port": 1187, "KeyboardLogging": "Enable", "RunOnStartup": "Enable", "RequestElevation": "Disable", "BypassUAC": "Disable", "ClearZoneIdentifier": "Enable", "ClearAccessControl": "Disable", "SetCriticalProcess": "Disable", "PreventSystemSleep": "Enable", "ActivateAwayMode": "Disable", "EnableDebugMode": "Disable", "RunDelay": 0, "ConnectDelay": 4000, "RestartDelay": 5000, "TimeoutInterval": 5000, "KeepAliveTimeout": 30000, "MutexTimeout": 5000, "LanTimeout": 2500, "WanTimeout": 8000, "BufferSize": "ffff0000", "MaxPacketSize": "0000a000", "GCThreshold": "0000a000", "UseCustomDNS": "Enable", "PrimaryDNSServer": "8.8.8.8", "BackupDNSServer": "8.8.4.4"}

Multi AV Scanner detection for submitted file

Source: SK TAX INV.exe	Virustotal: Detection: 17%			Perma Link
Source: SK TAX INV.exe	ReversingLabs: Detection: 11%

Multi AV Scanner detection for domain / URL

Source: dera31.ddns.net	Virustotal: Detection: 6%			Perma Link
Source: dera31.ddns.net	Virustotal: Detection: 6%			Perma Link
Source: 195.133.18.211	Virustotal: Detection: 6%			Perma Link

Multi AV Scanner detection for dropped file

Source: C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe	Virustotal: Detection: 17%			Perma Link
Source: C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe	ReversingLabs: Detection: 20%

Yara detected Nanocore RAT

Source: Yara match	File source: 3.0.SK TAX INV.exe.400000.10.unpack, type: UNPACKEDPE
Source: Yara match	File source: 3.0.SK TAX INV.exe.400000.8.unpack, type: UNPACKEDPE
Source: Yara match	File source: 3.0.SK TAX INV.exe.400000.12.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.2.SK TAX INV.exe.3b43e10.5.unpack, type: UNPACKEDPE
Source: Yara match	File source: 3.0.SK TAX INV.exe.400000.6.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.2.SK TAX INV.exe.3b113f0.6.unpack, type: UNPACKEDPE
Source: Yara match	File source: 3.0.SK TAX INV.exe.400000.4.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.2.SK TAX INV.exe.3b43e10.5.raw.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.2.SK TAX INV.exe.3b113f0.6.raw.unpack, type: UNPACKEDPE
Source: Yara match	File source: 00000003.00000000.665221730.0000000000402000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match	File source: 00000003.00000000.665589656.0000000000402000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match	File source: 00000003.00000000.665941289.0000000000402000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match	File source: 00000003.00000000.666335348.0000000000402000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match	File source: 00000000.00000002.670484046.0000000003B11000.00000004.00000001.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: SK TAX INV.exe PID: 3980, type: MEMORYSTR
Source: Yara match	File source: Process Memory Space: SK TAX INV.exe PID: 6636, type: MEMORYSTR

Antivirus or Machine Learning detection for unpacked file

Source: 3.0.SK TAX INV.exe.400000.10.unpack	Avira: Label: TR/Dropper.MSIL.Gen7
Source: 3.0.SK TAX INV.exe.400000.6.unpack	Avira: Label: TR/Dropper.MSIL.Gen7
Source: 3.0.SK TAX INV.exe.400000.12.unpack	Avira: Label: TR/Dropper.MSIL.Gen7
Source: 3.0.SK TAX INV.exe.400000.8.unpack	Avira: Label: TR/Dropper.MSIL.Gen7
Source: 3.0.SK TAX INV.exe.400000.4.unpack	Avira: Label: TR/Dropper.MSIL.Gen7

Compliance:

Uses 32bit PE files

Source: SK TAX INV.exe

Static PE information: 32BIT_MACHINE, EXECUTABLE_IMAGE

Contains modern PE file flags such as dynamic base (ASLR) or NX

Source: SK TAX INV.exe

Static PE information: NO_SEH, TERMINAL_SERVER_AWARE, DYNAMIC_BASE, NX_COMPAT

Networking:

Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)

Source: Traffic	Snort IDS: 2025019 ET TROJAN Possible NanoCore C2 60B 192.168.2.4:49777 -> 194.85.248.250:1187
Source: Traffic	Snort IDS: 2025019 ET TROJAN Possible NanoCore C2 60B 192.168.2.4:49778 -> 194.85.248.250:1187
Source: Traffic	Snort IDS: 2025019 ET TROJAN Possible NanoCore C2 60B 192.168.2.4:49779 -> 194.85.248.250:1187
Source: Traffic	Snort IDS: 2025019 ET TROJAN Possible NanoCore C2 60B 192.168.2.4:49780 -> 194.85.248.250:1187
Source: Traffic	Snort IDS: 2025019 ET TROJAN Possible NanoCore C2 60B 192.168.2.4:49783 -> 194.85.248.250:1187
Source: Traffic	Snort IDS: 2025019 ET TROJAN Possible NanoCore C2 60B 192.168.2.4:49784 -> 194.85.248.250:1187
Source: Traffic	Snort IDS: 2025019 ET TROJAN Possible NanoCore C2 60B 192.168.2.4:49785 -> 194.85.248.250:1187
Source: Traffic	Snort IDS: 2025019 ET TROJAN Possible NanoCore C2 60B 192.168.2.4:49793 -> 194.85.248.250:1187
Source: Traffic	Snort IDS: 2025019 ET TROJAN Possible NanoCore C2 60B 192.168.2.4:49821 -> 194.85.248.250:1187
Source: Traffic	Snort IDS: 2025019 ET TROJAN Possible NanoCore C2 60B 192.168.2.4:49824 -> 194.85.248.250:1187
Source: Traffic	Snort IDS: 2025019 ET TROJAN Possible NanoCore C2 60B 192.168.2.4:49829 -> 194.85.248.250:1187
Source: Traffic	Snort IDS: 2025019 ET TROJAN Possible NanoCore C2 60B 192.168.2.4:49831 -> 194.85.248.250:1187
Source: Traffic	Snort IDS: 2025019 ET TROJAN Possible NanoCore C2 60B 192.168.2.4:49853 -> 194.85.248.250:1187
Source: Traffic	Snort IDS: 2025019 ET TROJAN Possible NanoCore C2 60B 192.168.2.4:49856 -> 194.85.248.250:1187
Source: Traffic	Snort IDS: 2025019 ET TROJAN Possible NanoCore C2 60B 192.168.2.4:49857 -> 194.85.248.250:1187
Source: Traffic	Snort IDS: 2025019 ET TROJAN Possible NanoCore C2 60B 192.168.2.4:49859 -> 194.85.248.250:1187
Source: Traffic	Snort IDS: 2025019 ET TROJAN Possible NanoCore C2 60B 192.168.2.4:49863 -> 194.85.248.250:1187
Source: Traffic	Snort IDS: 2025019 ET TROJAN Possible NanoCore C2 60B 192.168.2.4:49864 -> 194.85.248.250:1187
Source: Traffic	Snort IDS: 2025019 ET TROJAN Possible NanoCore C2 60B 192.168.2.4:49865 -> 194.85.248.250:1187
Source: Traffic	Snort IDS: 2025019 ET TROJAN Possible NanoCore C2 60B 192.168.2.4:49866 -> 194.85.248.250:1187

C2 URLs / IPs found in malware configuration

Source: Malware configuration extractor	URLs: dera31.ddns.net
Source: Malware configuration extractor	URLs: 195.133.18.211

Uses dynamic DNS services

Source: unknown

DNS query: name: dera31.ddns.net

Internet Provider seen in connection with other malware

Source: Joe Sandbox View

ASN Name: DATACENTERRO DATACENTERRO

Detected TCP or UDP traffic on non-standard ports

Source: global traffic

TCP traffic: 192.168.2.4:49777 -> 194.85.248.250:1187

URLs found in memory or binary data

Source: SK TAX INV.exe, 00000000.00000002.668327294.00000000028A1000.00000004.00000001.sdmp, SK TAX INV.exe, 00000000.00000002.668432779.0000000002965000.00000004.00000001.sdmp

String found in binary or memory: http://schemas.xmlsoap.org/ws/2005/05/identity/claims/name

Performs DNS lookups

Source: unknown

DNS traffic detected: queries for: dera31.ddns.net

E-Banking Fraud:

Yara detected Nanocore RAT

Source: Yara match	File source: 3.0.SK TAX INV.exe.400000.10.unpack, type: UNPACKEDPE
Source: Yara match	File source: 3.0.SK TAX INV.exe.400000.8.unpack, type: UNPACKEDPE
Source: Yara match	File source: 3.0.SK TAX INV.exe.400000.12.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.2.SK TAX INV.exe.3b43e10.5.unpack, type: UNPACKEDPE
Source: Yara match	File source: 3.0.SK TAX INV.exe.400000.6.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.2.SK TAX INV.exe.3b113f0.6.unpack, type: UNPACKEDPE
Source: Yara match	File source: 3.0.SK TAX INV.exe.400000.4.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.2.SK TAX INV.exe.3b43e10.5.raw.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.2.SK TAX INV.exe.3b113f0.6.raw.unpack, type: UNPACKEDPE
Source: Yara match	File source: 00000003.00000000.665221730.0000000000402000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match	File source: 00000003.00000000.665589656.0000000000402000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match	File source: 00000003.00000000.665941289.0000000000402000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match	File source: 00000003.00000000.666335348.0000000000402000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match	File source: 00000000.00000002.670484046.0000000003B11000.00000004.00000001.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: SK TAX INV.exe PID: 3980, type: MEMORYSTR
Source: Yara match	File source: Process Memory Space: SK TAX INV.exe PID: 6636, type: MEMORYSTR

System Summary:

Malicious sample detected (through community Yara rule)

Source: 3.0.SK TAX INV.exe.400000.10.unpack, type: UNPACKEDPE	Matched rule: Detetcs the Nanocore RAT Author: Florian Roth
Source: 3.0.SK TAX INV.exe.400000.10.unpack, type: UNPACKEDPE	Matched rule: NanoCore Author: Kevin Breen <kevin@techanarchy.net>
Source: 3.0.SK TAX INV.exe.400000.8.unpack, type: UNPACKEDPE	Matched rule: Detetcs the Nanocore RAT Author: Florian Roth
Source: 3.0.SK TAX INV.exe.400000.8.unpack, type: UNPACKEDPE	Matched rule: NanoCore Author: Kevin Breen <kevin@techanarchy.net>
Source: 3.0.SK TAX INV.exe.400000.12.unpack, type: UNPACKEDPE	Matched rule: Detetcs the Nanocore RAT Author: Florian Roth
Source: 3.0.SK TAX INV.exe.400000.12.unpack, type: UNPACKEDPE	Matched rule: NanoCore Author: Kevin Breen <kevin@techanarchy.net>
Source: 0.2.SK TAX INV.exe.3b43e10.5.unpack, type: UNPACKEDPE	Matched rule: Detetcs the Nanocore RAT Author: Florian Roth
Source: 0.2.SK TAX INV.exe.3b43e10.5.unpack, type: UNPACKEDPE	Matched rule: NanoCore Author: Kevin Breen <kevin@techanarchy.net>
Source: 3.0.SK TAX INV.exe.400000.6.unpack, type: UNPACKEDPE	Matched rule: Detetcs the Nanocore RAT Author: Florian Roth
Source: 3.0.SK TAX INV.exe.400000.6.unpack, type: UNPACKEDPE	Matched rule: NanoCore Author: Kevin Breen <kevin@techanarchy.net>
Source: 0.2.SK TAX INV.exe.3b113f0.6.unpack, type: UNPACKEDPE	Matched rule: Detetcs the Nanocore RAT Author: Florian Roth
Source: 0.2.SK TAX INV.exe.3b113f0.6.unpack, type: UNPACKEDPE	Matched rule: NanoCore Author: Kevin Breen <kevin@techanarchy.net>
Source: 3.0.SK TAX INV.exe.400000.4.unpack, type: UNPACKEDPE	Matched rule: Detetcs the Nanocore RAT Author: Florian Roth
Source: 3.0.SK TAX INV.exe.400000.4.unpack, type: UNPACKEDPE	Matched rule: NanoCore Author: Kevin Breen <kevin@techanarchy.net>
Source: 0.2.SK TAX INV.exe.3b43e10.5.raw.unpack, type: UNPACKEDPE	Matched rule: Detetcs the Nanocore RAT Author: Florian Roth
Source: 0.2.SK TAX INV.exe.3b43e10.5.raw.unpack, type: UNPACKEDPE	Matched rule: NanoCore Author: Kevin Breen <kevin@techanarchy.net>
Source: 0.2.SK TAX INV.exe.3b113f0.6.raw.unpack, type: UNPACKEDPE	Matched rule: Detetcs the Nanocore RAT Author: Florian Roth
Source: 0.2.SK TAX INV.exe.3b113f0.6.raw.unpack, type: UNPACKEDPE	Matched rule: NanoCore Author: Kevin Breen <kevin@techanarchy.net>
Source: 00000003.00000000.665221730.0000000000402000.00000040.00000001.sdmp, type: MEMORY	Matched rule: Detetcs the Nanocore RAT Author: Florian Roth
Source: 00000003.00000000.665221730.0000000000402000.00000040.00000001.sdmp, type: MEMORY	Matched rule: NanoCore Author: Kevin Breen <kevin@techanarchy.net>
Source: 00000003.00000000.665589656.0000000000402000.00000040.00000001.sdmp, type: MEMORY	Matched rule: Detetcs the Nanocore RAT Author: Florian Roth
Source: 00000003.00000000.665589656.0000000000402000.00000040.00000001.sdmp, type: MEMORY	Matched rule: NanoCore Author: Kevin Breen <kevin@techanarchy.net>
Source: 00000003.00000000.665941289.0000000000402000.00000040.00000001.sdmp, type: MEMORY	Matched rule: Detetcs the Nanocore RAT Author: Florian Roth
Source: 00000003.00000000.665941289.0000000000402000.00000040.00000001.sdmp, type: MEMORY	Matched rule: NanoCore Author: Kevin Breen <kevin@techanarchy.net>
Source: 00000003.00000000.666335348.0000000000402000.00000040.00000001.sdmp, type: MEMORY	Matched rule: Detetcs the Nanocore RAT Author: Florian Roth
Source: 00000003.00000000.666335348.0000000000402000.00000040.00000001.sdmp, type: MEMORY	Matched rule: NanoCore Author: Kevin Breen <kevin@techanarchy.net>
Source: 00000000.00000002.670484046.0000000003B11000.00000004.00000001.sdmp, type: MEMORY	Matched rule: Detetcs the Nanocore RAT Author: Florian Roth
Source: 00000000.00000002.670484046.0000000003B11000.00000004.00000001.sdmp, type: MEMORY	Matched rule: NanoCore Author: Kevin Breen <kevin@techanarchy.net>
Source: Process Memory Space: SK TAX INV.exe PID: 3980, type: MEMORYSTR	Matched rule: Detetcs the Nanocore RAT Author: Florian Roth
Source: Process Memory Space: SK TAX INV.exe PID: 3980, type: MEMORYSTR	Matched rule: NanoCore Author: Kevin Breen <kevin@techanarchy.net>
Source: Process Memory Space: SK TAX INV.exe PID: 6636, type: MEMORYSTR	Matched rule: Detetcs the Nanocore RAT Author: Florian Roth
Source: Process Memory Space: SK TAX INV.exe PID: 6636, type: MEMORYSTR	Matched rule: NanoCore Author: Kevin Breen <kevin@techanarchy.net>

Uses 32bit PE files

Source: SK TAX INV.exe

Static PE information: 32BIT_MACHINE, EXECUTABLE_IMAGE

Yara signature match

Source: 3.0.SK TAX INV.exe.400000.10.unpack, type: UNPACKEDPE	Matched rule: Nanocore_RAT_Gen_2 date = 2016-04-22, hash1 = 755f49a4ffef5b1b62f4b5a5de279868c0c1766b528648febf76628f1fe39050, author = Florian Roth, description = Detetcs the Nanocore RAT, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE, score = https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Source: 3.0.SK TAX INV.exe.400000.10.unpack, type: UNPACKEDPE	Matched rule: Nanocore_RAT_Feb18_1 date = 2018-02-19, hash1 = aa486173e9d594729dbb5626748ce10a75ee966481b68c1b4f6323c827d9658c, author = Florian Roth, description = Detects Nanocore RAT, reference = Internal Research - T2T, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE
Source: 3.0.SK TAX INV.exe.400000.10.unpack, type: UNPACKEDPE	Matched rule: NanoCore date = 2014/04, filetype = exe, author = Kevin Breen <kevin@techanarchy.net>, maltype = Remote Access Trojan, ref = http://malwareconfig.com/stats/NanoCore
Source: 3.0.SK TAX INV.exe.400000.8.unpack, type: UNPACKEDPE	Matched rule: Nanocore_RAT_Gen_2 date = 2016-04-22, hash1 = 755f49a4ffef5b1b62f4b5a5de279868c0c1766b528648febf76628f1fe39050, author = Florian Roth, description = Detetcs the Nanocore RAT, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE, score = https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Source: 3.0.SK TAX INV.exe.400000.8.unpack, type: UNPACKEDPE	Matched rule: Nanocore_RAT_Feb18_1 date = 2018-02-19, hash1 = aa486173e9d594729dbb5626748ce10a75ee966481b68c1b4f6323c827d9658c, author = Florian Roth, description = Detects Nanocore RAT, reference = Internal Research - T2T, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE
Source: 3.0.SK TAX INV.exe.400000.8.unpack, type: UNPACKEDPE	Matched rule: NanoCore date = 2014/04, filetype = exe, author = Kevin Breen <kevin@techanarchy.net>, maltype = Remote Access Trojan, ref = http://malwareconfig.com/stats/NanoCore
Source: 3.0.SK TAX INV.exe.400000.12.unpack, type: UNPACKEDPE	Matched rule: Nanocore_RAT_Gen_2 date = 2016-04-22, hash1 = 755f49a4ffef5b1b62f4b5a5de279868c0c1766b528648febf76628f1fe39050, author = Florian Roth, description = Detetcs the Nanocore RAT, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE, score = https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Source: 3.0.SK TAX INV.exe.400000.12.unpack, type: UNPACKEDPE	Matched rule: Nanocore_RAT_Feb18_1 date = 2018-02-19, hash1 = aa486173e9d594729dbb5626748ce10a75ee966481b68c1b4f6323c827d9658c, author = Florian Roth, description = Detects Nanocore RAT, reference = Internal Research - T2T, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE
Source: 3.0.SK TAX INV.exe.400000.12.unpack, type: UNPACKEDPE	Matched rule: NanoCore date = 2014/04, filetype = exe, author = Kevin Breen <kevin@techanarchy.net>, maltype = Remote Access Trojan, ref = http://malwareconfig.com/stats/NanoCore
Source: 0.2.SK TAX INV.exe.3b43e10.5.unpack, type: UNPACKEDPE	Matched rule: Nanocore_RAT_Gen_2 date = 2016-04-22, hash1 = 755f49a4ffef5b1b62f4b5a5de279868c0c1766b528648febf76628f1fe39050, author = Florian Roth, description = Detetcs the Nanocore RAT, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE, score = https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Source: 0.2.SK TAX INV.exe.3b43e10.5.unpack, type: UNPACKEDPE	Matched rule: Nanocore_RAT_Feb18_1 date = 2018-02-19, hash1 = aa486173e9d594729dbb5626748ce10a75ee966481b68c1b4f6323c827d9658c, author = Florian Roth, description = Detects Nanocore RAT, reference = Internal Research - T2T, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE
Source: 0.2.SK TAX INV.exe.3b43e10.5.unpack, type: UNPACKEDPE	Matched rule: NanoCore date = 2014/04, filetype = exe, author = Kevin Breen <kevin@techanarchy.net>, maltype = Remote Access Trojan, ref = http://malwareconfig.com/stats/NanoCore
Source: 3.0.SK TAX INV.exe.400000.6.unpack, type: UNPACKEDPE	Matched rule: Nanocore_RAT_Gen_2 date = 2016-04-22, hash1 = 755f49a4ffef5b1b62f4b5a5de279868c0c1766b528648febf76628f1fe39050, author = Florian Roth, description = Detetcs the Nanocore RAT, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE, score = https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Source: 3.0.SK TAX INV.exe.400000.6.unpack, type: UNPACKEDPE	Matched rule: Nanocore_RAT_Feb18_1 date = 2018-02-19, hash1 = aa486173e9d594729dbb5626748ce10a75ee966481b68c1b4f6323c827d9658c, author = Florian Roth, description = Detects Nanocore RAT, reference = Internal Research - T2T, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE
Source: 3.0.SK TAX INV.exe.400000.6.unpack, type: UNPACKEDPE	Matched rule: NanoCore date = 2014/04, filetype = exe, author = Kevin Breen <kevin@techanarchy.net>, maltype = Remote Access Trojan, ref = http://malwareconfig.com/stats/NanoCore
Source: 0.2.SK TAX INV.exe.3b113f0.6.unpack, type: UNPACKEDPE	Matched rule: Nanocore_RAT_Gen_2 date = 2016-04-22, hash1 = 755f49a4ffef5b1b62f4b5a5de279868c0c1766b528648febf76628f1fe39050, author = Florian Roth, description = Detetcs the Nanocore RAT, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE, score = https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Source: 0.2.SK TAX INV.exe.3b113f0.6.unpack, type: UNPACKEDPE	Matched rule: Nanocore_RAT_Feb18_1 date = 2018-02-19, hash1 = aa486173e9d594729dbb5626748ce10a75ee966481b68c1b4f6323c827d9658c, author = Florian Roth, description = Detects Nanocore RAT, reference = Internal Research - T2T, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE
Source: 0.2.SK TAX INV.exe.3b113f0.6.unpack, type: UNPACKEDPE	Matched rule: NanoCore date = 2014/04, filetype = exe, author = Kevin Breen <kevin@techanarchy.net>, maltype = Remote Access Trojan, ref = http://malwareconfig.com/stats/NanoCore
Source: 3.0.SK TAX INV.exe.400000.4.unpack, type: UNPACKEDPE	Matched rule: Nanocore_RAT_Gen_2 date = 2016-04-22, hash1 = 755f49a4ffef5b1b62f4b5a5de279868c0c1766b528648febf76628f1fe39050, author = Florian Roth, description = Detetcs the Nanocore RAT, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE, score = https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Source: 3.0.SK TAX INV.exe.400000.4.unpack, type: UNPACKEDPE	Matched rule: Nanocore_RAT_Feb18_1 date = 2018-02-19, hash1 = aa486173e9d594729dbb5626748ce10a75ee966481b68c1b4f6323c827d9658c, author = Florian Roth, description = Detects Nanocore RAT, reference = Internal Research - T2T, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE
Source: 3.0.SK TAX INV.exe.400000.4.unpack, type: UNPACKEDPE	Matched rule: NanoCore date = 2014/04, filetype = exe, author = Kevin Breen <kevin@techanarchy.net>, maltype = Remote Access Trojan, ref = http://malwareconfig.com/stats/NanoCore
Source: 0.2.SK TAX INV.exe.3b43e10.5.raw.unpack, type: UNPACKEDPE	Matched rule: Nanocore_RAT_Gen_2 date = 2016-04-22, hash1 = 755f49a4ffef5b1b62f4b5a5de279868c0c1766b528648febf76628f1fe39050, author = Florian Roth, description = Detetcs the Nanocore RAT, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE, score = https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Source: 0.2.SK TAX INV.exe.3b43e10.5.raw.unpack, type: UNPACKEDPE	Matched rule: NanoCore date = 2014/04, filetype = exe, author = Kevin Breen <kevin@techanarchy.net>, maltype = Remote Access Trojan, ref = http://malwareconfig.com/stats/NanoCore
Source: 0.2.SK TAX INV.exe.3b113f0.6.raw.unpack, type: UNPACKEDPE	Matched rule: Nanocore_RAT_Gen_2 date = 2016-04-22, hash1 = 755f49a4ffef5b1b62f4b5a5de279868c0c1766b528648febf76628f1fe39050, author = Florian Roth, description = Detetcs the Nanocore RAT, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE, score = https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Source: 0.2.SK TAX INV.exe.3b113f0.6.raw.unpack, type: UNPACKEDPE	Matched rule: NanoCore date = 2014/04, filetype = exe, author = Kevin Breen <kevin@techanarchy.net>, maltype = Remote Access Trojan, ref = http://malwareconfig.com/stats/NanoCore
Source: 00000003.00000000.665221730.0000000000402000.00000040.00000001.sdmp, type: MEMORY	Matched rule: Nanocore_RAT_Gen_2 date = 2016-04-22, hash1 = 755f49a4ffef5b1b62f4b5a5de279868c0c1766b528648febf76628f1fe39050, author = Florian Roth, description = Detetcs the Nanocore RAT, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE, score = https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Source: 00000003.00000000.665221730.0000000000402000.00000040.00000001.sdmp, type: MEMORY	Matched rule: NanoCore date = 2014/04, filetype = exe, author = Kevin Breen <kevin@techanarchy.net>, maltype = Remote Access Trojan, ref = http://malwareconfig.com/stats/NanoCore
Source: 00000003.00000000.665589656.0000000000402000.00000040.00000001.sdmp, type: MEMORY	Matched rule: Nanocore_RAT_Gen_2 date = 2016-04-22, hash1 = 755f49a4ffef5b1b62f4b5a5de279868c0c1766b528648febf76628f1fe39050, author = Florian Roth, description = Detetcs the Nanocore RAT, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE, score = https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Source: 00000003.00000000.665589656.0000000000402000.00000040.00000001.sdmp, type: MEMORY	Matched rule: NanoCore date = 2014/04, filetype = exe, author = Kevin Breen <kevin@techanarchy.net>, maltype = Remote Access Trojan, ref = http://malwareconfig.com/stats/NanoCore
Source: 00000003.00000000.665941289.0000000000402000.00000040.00000001.sdmp, type: MEMORY	Matched rule: Nanocore_RAT_Gen_2 date = 2016-04-22, hash1 = 755f49a4ffef5b1b62f4b5a5de279868c0c1766b528648febf76628f1fe39050, author = Florian Roth, description = Detetcs the Nanocore RAT, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE, score = https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Source: 00000003.00000000.665941289.0000000000402000.00000040.00000001.sdmp, type: MEMORY	Matched rule: NanoCore date = 2014/04, filetype = exe, author = Kevin Breen <kevin@techanarchy.net>, maltype = Remote Access Trojan, ref = http://malwareconfig.com/stats/NanoCore
Source: 00000003.00000000.666335348.0000000000402000.00000040.00000001.sdmp, type: MEMORY	Matched rule: Nanocore_RAT_Gen_2 date = 2016-04-22, hash1 = 755f49a4ffef5b1b62f4b5a5de279868c0c1766b528648febf76628f1fe39050, author = Florian Roth, description = Detetcs the Nanocore RAT, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE, score = https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Source: 00000003.00000000.666335348.0000000000402000.00000040.00000001.sdmp, type: MEMORY	Matched rule: NanoCore date = 2014/04, filetype = exe, author = Kevin Breen <kevin@techanarchy.net>, maltype = Remote Access Trojan, ref = http://malwareconfig.com/stats/NanoCore
Source: 00000000.00000002.670484046.0000000003B11000.00000004.00000001.sdmp, type: MEMORY	Matched rule: Nanocore_RAT_Gen_2 date = 2016-04-22, hash1 = 755f49a4ffef5b1b62f4b5a5de279868c0c1766b528648febf76628f1fe39050, author = Florian Roth, description = Detetcs the Nanocore RAT, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE, score = https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Source: 00000000.00000002.670484046.0000000003B11000.00000004.00000001.sdmp, type: MEMORY	Matched rule: NanoCore date = 2014/04, filetype = exe, author = Kevin Breen <kevin@techanarchy.net>, maltype = Remote Access Trojan, ref = http://malwareconfig.com/stats/NanoCore
Source: Process Memory Space: SK TAX INV.exe PID: 3980, type: MEMORYSTR	Matched rule: Nanocore_RAT_Gen_2 date = 2016-04-22, hash1 = 755f49a4ffef5b1b62f4b5a5de279868c0c1766b528648febf76628f1fe39050, author = Florian Roth, description = Detetcs the Nanocore RAT, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE, score = https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Source: Process Memory Space: SK TAX INV.exe PID: 3980, type: MEMORYSTR	Matched rule: NanoCore date = 2014/04, filetype = exe, author = Kevin Breen <kevin@techanarchy.net>, maltype = Remote Access Trojan, ref = http://malwareconfig.com/stats/NanoCore
Source: Process Memory Space: SK TAX INV.exe PID: 6636, type: MEMORYSTR	Matched rule: Nanocore_RAT_Gen_2 date = 2016-04-22, hash1 = 755f49a4ffef5b1b62f4b5a5de279868c0c1766b528648febf76628f1fe39050, author = Florian Roth, description = Detetcs the Nanocore RAT, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE, score = https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Source: Process Memory Space: SK TAX INV.exe PID: 6636, type: MEMORYSTR	Matched rule: NanoCore date = 2014/04, filetype = exe, author = Kevin Breen <kevin@techanarchy.net>, maltype = Remote Access Trojan, ref = http://malwareconfig.com/stats/NanoCore

Detected potential crypto function

Source: C:\Users\user\Desktop\SK TAX INV.exe	Code function: 0_2_00426BFF		0_2_00426BFF
Source: C:\Users\user\Desktop\SK TAX INV.exe	Code function: 0_2_00DF8250		0_2_00DF8250
Source: C:\Users\user\Desktop\SK TAX INV.exe	Code function: 0_2_00DFD2E8		0_2_00DFD2E8

Sample file is different than original file name gathered from version info

Source: SK TAX INV.exe	Binary or memory string: OriginalFilename vs SK TAX INV.exe
Source: SK TAX INV.exe, 00000000.00000002.671989261.0000000005CF0000.00000004.00020000.sdmp	Binary or memory string: OriginalFilenameUI.dll@ vs SK TAX INV.exe
Source: SK TAX INV.exe, 00000000.00000002.668843928.00000000038AD000.00000004.00000001.sdmp	Binary or memory string: OriginalFilenameUI.dll@ vs SK TAX INV.exe
Source: SK TAX INV.exe, 00000000.00000002.671752533.0000000005760000.00000004.00020000.sdmp	Binary or memory string: OriginalFilenameInnerException.dll" vs SK TAX INV.exe
Source: SK TAX INV.exe, 00000000.00000002.668327294.00000000028A1000.00000004.00000001.sdmp	Binary or memory string: OriginalFilenameInnerException.dll" vs SK TAX INV.exe
Source: SK TAX INV.exe, 00000000.00000002.668432779.0000000002965000.00000004.00000001.sdmp	Binary or memory string: OriginalFilenameInnerException.dll" vs SK TAX INV.exe
Source: SK TAX INV.exe, 00000003.00000003.684774036.00000000012F3000.00000004.00000001.sdmp	Binary or memory string: OriginalFilenameToolsClientPlugin.dll4 vs SK TAX INV.exe
Source: SK TAX INV.exe	Binary or memory string: OriginalFilenameTypeLibTypeAttribu.exe. vs SK TAX INV.exe

PE file has an executable .text section which is very likely to contain packed code (zlib compression ratio < 0.3)

Source: SK TAX INV.exe	Static PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
Source: dhcpmon.exe.3.dr	Static PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ

Sample is known by Antivirus

Source: SK TAX INV.exe	Virustotal: Detection: 17%
Source: SK TAX INV.exe	ReversingLabs: Detection: 11%

Sample reads its own file content

Source: C:\Users\user\Desktop\SK TAX INV.exe

File read: C:\Users\user\Desktop\SK TAX INV.exe:Zone.Identifier

Jump to behavior

PE file has an executable .text section and no other executable section

Source: SK TAX INV.exe

Static PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ

Reads software policies

Source: C:\Users\user\Desktop\SK TAX INV.exe

Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers

Jump to behavior

Spawns processes

Source: unknown	Process created: C:\Users\user\Desktop\SK TAX INV.exe "C:\Users\user\Desktop\SK TAX INV.exe"
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process created: C:\Users\user\Desktop\SK TAX INV.exe C:\Users\user\Desktop\SK TAX INV.exe
Source: unknown	Process created: C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe "C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe"
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process created: C:\Users\user\Desktop\SK TAX INV.exe C:\Users\user\Desktop\SK TAX INV.exe			Jump to behavior

Uses an in-process (OLE) Automation server

Source: C:\Users\user\Desktop\SK TAX INV.exe

Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0A29FF9E-7F9C-4437-8B11-F424491E3931}\InprocServer32

Jump to behavior

Creates files inside the user directory

Source: C:\Users\user\Desktop\SK TAX INV.exe

File created: C:\Users\user\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\SK TAX INV.exe.log

Jump to behavior

Classification label

Source: classification engine

Classification label: mal100.troj.evad.winEXE@4/7@20/1

.NET source code contains many API calls related to security

Source: 3.0.SK TAX INV.exe.400000.12.unpack, u0023u003dqjIje6jGWLd2EOkfZXKqBbgu003du003d.cs	Security API names: System.Security.Principal.WindowsIdentity System.Security.Principal.WindowsIdentity::GetCurrent()
Source: 3.0.SK TAX INV.exe.400000.12.unpack, u0023u003dqjIje6jGWLd2EOkfZXKqBbgu003du003d.cs	Security API names: System.Boolean System.Security.Principal.WindowsPrincipal::IsInRole(System.Security.Principal.WindowsBuiltInRole)
Source: 3.0.SK TAX INV.exe.400000.4.unpack, u0023u003dqjIje6jGWLd2EOkfZXKqBbgu003du003d.cs	Security API names: System.Security.Principal.WindowsIdentity System.Security.Principal.WindowsIdentity::GetCurrent()
Source: 3.0.SK TAX INV.exe.400000.4.unpack, u0023u003dqjIje6jGWLd2EOkfZXKqBbgu003du003d.cs	Security API names: System.Boolean System.Security.Principal.WindowsPrincipal::IsInRole(System.Security.Principal.WindowsBuiltInRole)
Source: 3.0.SK TAX INV.exe.400000.10.unpack, u0023u003dqjIje6jGWLd2EOkfZXKqBbgu003du003d.cs	Security API names: System.Security.Principal.WindowsIdentity System.Security.Principal.WindowsIdentity::GetCurrent()
Source: 3.0.SK TAX INV.exe.400000.10.unpack, u0023u003dqjIje6jGWLd2EOkfZXKqBbgu003du003d.cs	Security API names: System.Boolean System.Security.Principal.WindowsPrincipal::IsInRole(System.Security.Principal.WindowsBuiltInRole)
Source: 3.0.SK TAX INV.exe.400000.8.unpack, u0023u003dqjIje6jGWLd2EOkfZXKqBbgu003du003d.cs	Security API names: System.Security.Principal.WindowsIdentity System.Security.Principal.WindowsIdentity::GetCurrent()
Source: 3.0.SK TAX INV.exe.400000.8.unpack, u0023u003dqjIje6jGWLd2EOkfZXKqBbgu003du003d.cs	Security API names: System.Boolean System.Security.Principal.WindowsPrincipal::IsInRole(System.Security.Principal.WindowsBuiltInRole)
Source: 3.0.SK TAX INV.exe.400000.6.unpack, u0023u003dqjIje6jGWLd2EOkfZXKqBbgu003du003d.cs	Security API names: System.Security.Principal.WindowsIdentity System.Security.Principal.WindowsIdentity::GetCurrent()
Source: 3.0.SK TAX INV.exe.400000.6.unpack, u0023u003dqjIje6jGWLd2EOkfZXKqBbgu003du003d.cs	Security API names: System.Boolean System.Security.Principal.WindowsPrincipal::IsInRole(System.Security.Principal.WindowsBuiltInRole)

Parts of this applications are using the .NET runtime (Probably coded in C#)

Source: C:\Users\user\Desktop\SK TAX INV.exe	Section loaded: C:\Windows\assembly\NativeImages_v4.0.30319_32\mscorlib\a152fe02a317a77aeee36903305e8ba6\mscorlib.ni.dll			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Section loaded: C:\Windows\assembly\NativeImages_v4.0.30319_32\mscorlib\a152fe02a317a77aeee36903305e8ba6\mscorlib.ni.dll			Jump to behavior

Creates mutexes

Source: C:\Users\user\Desktop\SK TAX INV.exe	Mutant created: \Sessions\1\BaseNamedObjects\Global\{f4157c11-54e5-4893-8a60-6856b8471d8c}
Source: C:\Users\user\Desktop\SK TAX INV.exe	Mutant created: \Sessions\1\BaseNamedObjects\Global\.net data provider for sqlserver

Creates files inside the program directory

Source: C:\Users\user\Desktop\SK TAX INV.exe

File created: C:\Program Files (x86)\DHCP Monitor

Jump to behavior

Sample might require command line arguments

Source: SK TAX INV.exe	String found in binary or memory: /TypeLibTypeAttribu;component/views/addbook.xaml
Source: SK TAX INV.exe	String found in binary or memory: views/addbook.baml
Source: SK TAX INV.exe	String found in binary or memory: views/addcustomer.baml
Source: SK TAX INV.exe	String found in binary or memory: /TypeLibTypeAttribu;component/views/addcustomer.xaml
Source: SK TAX INV.exe	String found in binary or memory: a/TypeLibTypeAttribu;component/views/addbook.xamlw/TypeLibTypeAttribu;component/views/borrowfrombookview.xamlm/TypeLibTypeAttribu;component/views/borrowingview.xamlg/TypeLibTypeAttribu;component/views/changebook.xamlo/TypeLibTypeAttribu;component/views/changecustomer.xamlk/TypeLibTypeAttribu;component/views/customerview.xamlo/TypeLibTypeAttribu;component/views/deletecustomer.xamle/TypeLibTypeAttribu;component/views/errorview.xamli/TypeLibTypeAttribu;component/views/smallextras.xamli/TypeLibTypeAttribu;component/views/addcustomer.xaml
Source: SK TAX INV.exe	String found in binary or memory: *images/booksimage.jpg$views/addbook.baml1J,views/addcustomer.baml

.NET source code contains calls to encryption/decryption functions

Source: 3.0.SK TAX INV.exe.400000.10.unpack, u0023u003dqjIje6jGWLd2EOkfZXKqBbgu003du003d.cs	Cryptographic APIs: 'TransformFinalBlock', 'CreateDecryptor'
Source: 3.0.SK TAX INV.exe.400000.10.unpack, u0023u003dqVxXNKnhAcArgJoGGYXiyyQu003du003d.cs	Cryptographic APIs: 'CreateDecryptor'
Source: 3.0.SK TAX INV.exe.400000.10.unpack, u0023u003dqVxXNKnhAcArgJoGGYXiyyQu003du003d.cs	Cryptographic APIs: 'TransformFinalBlock'
Source: 3.0.SK TAX INV.exe.400000.6.unpack, u0023u003dqjIje6jGWLd2EOkfZXKqBbgu003du003d.cs	Cryptographic APIs: 'TransformFinalBlock', 'CreateDecryptor'
Source: 3.0.SK TAX INV.exe.400000.6.unpack, u0023u003dqVxXNKnhAcArgJoGGYXiyyQu003du003d.cs	Cryptographic APIs: 'CreateDecryptor'
Source: 3.0.SK TAX INV.exe.400000.6.unpack, u0023u003dqVxXNKnhAcArgJoGGYXiyyQu003du003d.cs	Cryptographic APIs: 'TransformFinalBlock'
Source: 3.0.SK TAX INV.exe.400000.12.unpack, u0023u003dqjIje6jGWLd2EOkfZXKqBbgu003du003d.cs	Cryptographic APIs: 'TransformFinalBlock', 'CreateDecryptor'
Source: 3.0.SK TAX INV.exe.400000.12.unpack, u0023u003dqVxXNKnhAcArgJoGGYXiyyQu003du003d.cs	Cryptographic APIs: 'CreateDecryptor'
Source: 3.0.SK TAX INV.exe.400000.12.unpack, u0023u003dqVxXNKnhAcArgJoGGYXiyyQu003du003d.cs	Cryptographic APIs: 'TransformFinalBlock'

Uses Microsoft Silverlight

Source: C:\Users\user\Desktop\SK TAX INV.exe

File opened: C:\Windows\Microsoft.NET\Framework\v4.0.30319\mscorrc.dll

Jump to behavior

PE file contains a COM descriptor data directory

Source: SK TAX INV.exe

Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR

Contains modern PE file flags such as dynamic base (ASLR) or NX

Source: SK TAX INV.exe

Static PE information: NO_SEH, TERMINAL_SERVER_AWARE, DYNAMIC_BASE, NX_COMPAT

Data Obfuscation:

.NET source code contains potential unpacker

Source: SK TAX INV.exe, Biblan/Views/MainWindow.cs	.Net Code: ObjectIdentifier System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 0.2.SK TAX INV.exe.420000.0.unpack, Biblan/Views/MainWindow.cs	.Net Code: ObjectIdentifier System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 0.0.SK TAX INV.exe.420000.0.unpack, Biblan/Views/MainWindow.cs	.Net Code: ObjectIdentifier System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: dhcpmon.exe.3.dr, Biblan/Views/MainWindow.cs	.Net Code: ObjectIdentifier System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 3.0.SK TAX INV.exe.b10000.5.unpack, Biblan/Views/MainWindow.cs	.Net Code: ObjectIdentifier System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 3.0.SK TAX INV.exe.400000.10.unpack, u0023u003dqjIje6jGWLd2EOkfZXKqBbgu003du003d.cs	.Net Code: #=q_FL69pQf17BUSAFbWYu1SStMAbdu$R1GJ8VY8UL5_EA= System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 3.0.SK TAX INV.exe.400000.10.unpack, u0023u003dqxoz66kOqvxr21iYXZYXWiumy9eZGwFWaiX4C5X8aecUu003d.cs	.Net Code: #=qKU0J1fiP8KA33eFK1owekQ== System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 3.0.SK TAX INV.exe.400000.6.unpack, u0023u003dqjIje6jGWLd2EOkfZXKqBbgu003du003d.cs	.Net Code: #=q_FL69pQf17BUSAFbWYu1SStMAbdu$R1GJ8VY8UL5_EA= System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 3.0.SK TAX INV.exe.400000.6.unpack, u0023u003dqxoz66kOqvxr21iYXZYXWiumy9eZGwFWaiX4C5X8aecUu003d.cs	.Net Code: #=qKU0J1fiP8KA33eFK1owekQ== System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 3.0.SK TAX INV.exe.b10000.1.unpack, Biblan/Views/MainWindow.cs	.Net Code: ObjectIdentifier System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 3.0.SK TAX INV.exe.b10000.2.unpack, Biblan/Views/MainWindow.cs	.Net Code: ObjectIdentifier System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 3.0.SK TAX INV.exe.400000.12.unpack, u0023u003dqjIje6jGWLd2EOkfZXKqBbgu003du003d.cs	.Net Code: #=q_FL69pQf17BUSAFbWYu1SStMAbdu$R1GJ8VY8UL5_EA= System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 3.0.SK TAX INV.exe.400000.12.unpack, u0023u003dqxoz66kOqvxr21iYXZYXWiumy9eZGwFWaiX4C5X8aecUu003d.cs	.Net Code: #=qKU0J1fiP8KA33eFK1owekQ== System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 3.0.SK TAX INV.exe.b10000.7.unpack, Biblan/Views/MainWindow.cs	.Net Code: ObjectIdentifier System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 3.0.SK TAX INV.exe.400000.8.unpack, u0023u003dqjIje6jGWLd2EOkfZXKqBbgu003du003d.cs	.Net Code: #=q_FL69pQf17BUSAFbWYu1SStMAbdu$R1GJ8VY8UL5_EA= System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 3.0.SK TAX INV.exe.400000.8.unpack, u0023u003dqxoz66kOqvxr21iYXZYXWiumy9eZGwFWaiX4C5X8aecUu003d.cs	.Net Code: #=qKU0J1fiP8KA33eFK1owekQ== System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 3.0.SK TAX INV.exe.b10000.9.unpack, Biblan/Views/MainWindow.cs	.Net Code: ObjectIdentifier System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 3.0.SK TAX INV.exe.b10000.13.unpack, Biblan/Views/MainWindow.cs	.Net Code: ObjectIdentifier System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 3.0.SK TAX INV.exe.400000.4.unpack, u0023u003dqjIje6jGWLd2EOkfZXKqBbgu003du003d.cs	.Net Code: #=q_FL69pQf17BUSAFbWYu1SStMAbdu$R1GJ8VY8UL5_EA= System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 3.0.SK TAX INV.exe.400000.4.unpack, u0023u003dqxoz66kOqvxr21iYXZYXWiumy9eZGwFWaiX4C5X8aecUu003d.cs	.Net Code: #=qKU0J1fiP8KA33eFK1owekQ== System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 3.0.SK TAX INV.exe.b10000.11.unpack, Biblan/Views/MainWindow.cs	.Net Code: ObjectIdentifier System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 3.0.SK TAX INV.exe.b10000.0.unpack, Biblan/Views/MainWindow.cs	.Net Code: ObjectIdentifier System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 3.0.SK TAX INV.exe.b10000.3.unpack, Biblan/Views/MainWindow.cs	.Net Code: ObjectIdentifier System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 6.0.dhcpmon.exe.920000.0.unpack, Biblan/Views/MainWindow.cs	.Net Code: ObjectIdentifier System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])
Source: 6.2.dhcpmon.exe.920000.0.unpack, Biblan/Views/MainWindow.cs	.Net Code: ObjectIdentifier System.Reflection.Assembly System.Reflection.Assembly::Load(System.Byte[])

Uses code obfuscation techniques (call, push, ret)

Source: C:\Users\user\Desktop\SK TAX INV.exe	Code function: 0_2_00429347 push ds; ret		0_2_0042934C
Source: C:\Users\user\Desktop\SK TAX INV.exe	Code function: 0_2_00429361 push ds; retf		0_2_00429364
Source: C:\Users\user\Desktop\SK TAX INV.exe	Code function: 0_2_004292F5 push ds; ret		0_2_00429340

Binary may include packed or encrypted code

Source: initial sample	Static PE information: section name: .text entropy: 7.87847086948
Source: initial sample	Static PE information: section name: .text entropy: 7.87847086948

.NET source code contains many randomly named methods

Source: 3.0.SK TAX INV.exe.400000.10.unpack, u0023u003dqJT4I5hOweIku0024xYFEeDszbikglXCuquUdu0024v9AXtyq2nsu003d.cs	High entropy of concatenated method names: '#=qBeOBlH6CwHFnQdZWWBgZ_pemudZ6CfCVcfOQtgpeG$Y=', '#=q5v5cLSMFBaxiTtOEjscx86gN2ozXlfytiL6UmXnyWtg=', '#=q_XA5h2lVGHLcY9dK754wKGrOjAm6aBbwPxcUJXgJThJUz83kMbCL53G5uuOLP6Rq', '#=qIFfr$DrKqIieRc688$vylAlBsEnx9Z3$TxvrDsPURfM=', '#=qejgvNXJQvgM2GomZsygLjreyguSPQ29pQHqjR_a0dWk=', '#=qCGokdf0OOxeMJLDkXSfc3NPmwygIQ29RjKQWj$wbNGB9C1pPgma_891QiNyTRXcA', '#=qDqyUVyJLXCtYqhZ0$opqkomqhUBn2WCeEEvGAXlNQ$I=', '#=qdImPAY1o3YhbLtukwCQ91cISaeIEWRKSYrGZ3dTVnkY=', '#=qza7O1AHrroJC7yRIJz4wINR_Sgo4hDpQrj_OYfIrlJE=', '#=q6Ct3QmvVLFC7my$dL1uEiHGmXJ5qCuK4WIhDwfhPTFs='
Source: 3.0.SK TAX INV.exe.400000.10.unpack, u0023u003dqWrm21vQ8CBMZP_RBTwpusAu003du003d.cs	High entropy of concatenated method names: '#=qCgU$tDqtOAyz2b$RwfSF7UzBcCAr0rFJWxm16x7Lre0=', '#=qeD3MBfedCIuKIQf9V1u2N3YS4VXE_FOHqw_XAjWtZK8=', '#=q$mvEHEBkZud$AdHPWqsMQnw5Xm5sD4vBSSmqrKuXGOk=', '#=qZaN94n8dM6tBEf$qCdY2kbTZb5BOW8Z134$2tNv7EJs=', '#=qtlZnL8mho$rv1eTFz0Mw9UYFC_yCabEZ0xtVePn6wR5aSHE7ti3UfKg2l7D0_xk8', '#=qVS$QmQjvFfsXSqQAKGSl6HGbkse2SG0XCab4upVjtRJkvhTEk$oIS2I9Zja7id1Q', '#=qxJg7RxTW1v5mnt12xXeJiYJv_bcctbtL2BCD5MjDi45Hlz6t8vwDNTv1Rv7tgIct', '#=qp$ZVC1r9spi890l$D7IwEd3faoKeWHvv42mVq8wIIWM=', '#=qCoWHlVuoVRMkOzC7RZubJCslkxaEWn9yZiIydECf69$ktj0IPD5wAwC2H5Cc8C$L', '#=qqs1moO$mYaS72OXOWe0Z6GycslEb6e9Ipoy7ppW0O5abIp05ajv8doqdJZHlN3cK'
Source: 3.0.SK TAX INV.exe.400000.6.unpack, u0023u003dqJT4I5hOweIku0024xYFEeDszbikglXCuquUdu0024v9AXtyq2nsu003d.cs	High entropy of concatenated method names: '#=qBeOBlH6CwHFnQdZWWBgZ_pemudZ6CfCVcfOQtgpeG$Y=', '#=q5v5cLSMFBaxiTtOEjscx86gN2ozXlfytiL6UmXnyWtg=', '#=q_XA5h2lVGHLcY9dK754wKGrOjAm6aBbwPxcUJXgJThJUz83kMbCL53G5uuOLP6Rq', '#=qIFfr$DrKqIieRc688$vylAlBsEnx9Z3$TxvrDsPURfM=', '#=qejgvNXJQvgM2GomZsygLjreyguSPQ29pQHqjR_a0dWk=', '#=qCGokdf0OOxeMJLDkXSfc3NPmwygIQ29RjKQWj$wbNGB9C1pPgma_891QiNyTRXcA', '#=qDqyUVyJLXCtYqhZ0$opqkomqhUBn2WCeEEvGAXlNQ$I=', '#=qdImPAY1o3YhbLtukwCQ91cISaeIEWRKSYrGZ3dTVnkY=', '#=qza7O1AHrroJC7yRIJz4wINR_Sgo4hDpQrj_OYfIrlJE=', '#=q6Ct3QmvVLFC7my$dL1uEiHGmXJ5qCuK4WIhDwfhPTFs='
Source: 3.0.SK TAX INV.exe.400000.6.unpack, u0023u003dqWrm21vQ8CBMZP_RBTwpusAu003du003d.cs	High entropy of concatenated method names: '#=qCgU$tDqtOAyz2b$RwfSF7UzBcCAr0rFJWxm16x7Lre0=', '#=qeD3MBfedCIuKIQf9V1u2N3YS4VXE_FOHqw_XAjWtZK8=', '#=q$mvEHEBkZud$AdHPWqsMQnw5Xm5sD4vBSSmqrKuXGOk=', '#=qZaN94n8dM6tBEf$qCdY2kbTZb5BOW8Z134$2tNv7EJs=', '#=qtlZnL8mho$rv1eTFz0Mw9UYFC_yCabEZ0xtVePn6wR5aSHE7ti3UfKg2l7D0_xk8', '#=qVS$QmQjvFfsXSqQAKGSl6HGbkse2SG0XCab4upVjtRJkvhTEk$oIS2I9Zja7id1Q', '#=qxJg7RxTW1v5mnt12xXeJiYJv_bcctbtL2BCD5MjDi45Hlz6t8vwDNTv1Rv7tgIct', '#=qp$ZVC1r9spi890l$D7IwEd3faoKeWHvv42mVq8wIIWM=', '#=qCoWHlVuoVRMkOzC7RZubJCslkxaEWn9yZiIydECf69$ktj0IPD5wAwC2H5Cc8C$L', '#=qqs1moO$mYaS72OXOWe0Z6GycslEb6e9Ipoy7ppW0O5abIp05ajv8doqdJZHlN3cK'
Source: 3.0.SK TAX INV.exe.400000.12.unpack, u0023u003dqJT4I5hOweIku0024xYFEeDszbikglXCuquUdu0024v9AXtyq2nsu003d.cs	High entropy of concatenated method names: '#=qBeOBlH6CwHFnQdZWWBgZ_pemudZ6CfCVcfOQtgpeG$Y=', '#=q5v5cLSMFBaxiTtOEjscx86gN2ozXlfytiL6UmXnyWtg=', '#=q_XA5h2lVGHLcY9dK754wKGrOjAm6aBbwPxcUJXgJThJUz83kMbCL53G5uuOLP6Rq', '#=qIFfr$DrKqIieRc688$vylAlBsEnx9Z3$TxvrDsPURfM=', '#=qejgvNXJQvgM2GomZsygLjreyguSPQ29pQHqjR_a0dWk=', '#=qCGokdf0OOxeMJLDkXSfc3NPmwygIQ29RjKQWj$wbNGB9C1pPgma_891QiNyTRXcA', '#=qDqyUVyJLXCtYqhZ0$opqkomqhUBn2WCeEEvGAXlNQ$I=', '#=qdImPAY1o3YhbLtukwCQ91cISaeIEWRKSYrGZ3dTVnkY=', '#=qza7O1AHrroJC7yRIJz4wINR_Sgo4hDpQrj_OYfIrlJE=', '#=q6Ct3QmvVLFC7my$dL1uEiHGmXJ5qCuK4WIhDwfhPTFs='
Source: 3.0.SK TAX INV.exe.400000.12.unpack, u0023u003dqWrm21vQ8CBMZP_RBTwpusAu003du003d.cs	High entropy of concatenated method names: '#=qCgU$tDqtOAyz2b$RwfSF7UzBcCAr0rFJWxm16x7Lre0=', '#=qeD3MBfedCIuKIQf9V1u2N3YS4VXE_FOHqw_XAjWtZK8=', '#=q$mvEHEBkZud$AdHPWqsMQnw5Xm5sD4vBSSmqrKuXGOk=', '#=qZaN94n8dM6tBEf$qCdY2kbTZb5BOW8Z134$2tNv7EJs=', '#=qtlZnL8mho$rv1eTFz0Mw9UYFC_yCabEZ0xtVePn6wR5aSHE7ti3UfKg2l7D0_xk8', '#=qVS$QmQjvFfsXSqQAKGSl6HGbkse2SG0XCab4upVjtRJkvhTEk$oIS2I9Zja7id1Q', '#=qxJg7RxTW1v5mnt12xXeJiYJv_bcctbtL2BCD5MjDi45Hlz6t8vwDNTv1Rv7tgIct', '#=qp$ZVC1r9spi890l$D7IwEd3faoKeWHvv42mVq8wIIWM=', '#=qCoWHlVuoVRMkOzC7RZubJCslkxaEWn9yZiIydECf69$ktj0IPD5wAwC2H5Cc8C$L', '#=qqs1moO$mYaS72OXOWe0Z6GycslEb6e9Ipoy7ppW0O5abIp05ajv8doqdJZHlN3cK'
Source: 3.0.SK TAX INV.exe.400000.8.unpack, u0023u003dqJT4I5hOweIku0024xYFEeDszbikglXCuquUdu0024v9AXtyq2nsu003d.cs	High entropy of concatenated method names: '#=qBeOBlH6CwHFnQdZWWBgZ_pemudZ6CfCVcfOQtgpeG$Y=', '#=q5v5cLSMFBaxiTtOEjscx86gN2ozXlfytiL6UmXnyWtg=', '#=q_XA5h2lVGHLcY9dK754wKGrOjAm6aBbwPxcUJXgJThJUz83kMbCL53G5uuOLP6Rq', '#=qIFfr$DrKqIieRc688$vylAlBsEnx9Z3$TxvrDsPURfM=', '#=qejgvNXJQvgM2GomZsygLjreyguSPQ29pQHqjR_a0dWk=', '#=qCGokdf0OOxeMJLDkXSfc3NPmwygIQ29RjKQWj$wbNGB9C1pPgma_891QiNyTRXcA', '#=qDqyUVyJLXCtYqhZ0$opqkomqhUBn2WCeEEvGAXlNQ$I=', '#=qdImPAY1o3YhbLtukwCQ91cISaeIEWRKSYrGZ3dTVnkY=', '#=qza7O1AHrroJC7yRIJz4wINR_Sgo4hDpQrj_OYfIrlJE=', '#=q6Ct3QmvVLFC7my$dL1uEiHGmXJ5qCuK4WIhDwfhPTFs='
Source: 3.0.SK TAX INV.exe.400000.8.unpack, u0023u003dqWrm21vQ8CBMZP_RBTwpusAu003du003d.cs	High entropy of concatenated method names: '#=qCgU$tDqtOAyz2b$RwfSF7UzBcCAr0rFJWxm16x7Lre0=', '#=qeD3MBfedCIuKIQf9V1u2N3YS4VXE_FOHqw_XAjWtZK8=', '#=q$mvEHEBkZud$AdHPWqsMQnw5Xm5sD4vBSSmqrKuXGOk=', '#=qZaN94n8dM6tBEf$qCdY2kbTZb5BOW8Z134$2tNv7EJs=', '#=qtlZnL8mho$rv1eTFz0Mw9UYFC_yCabEZ0xtVePn6wR5aSHE7ti3UfKg2l7D0_xk8', '#=qVS$QmQjvFfsXSqQAKGSl6HGbkse2SG0XCab4upVjtRJkvhTEk$oIS2I9Zja7id1Q', '#=qxJg7RxTW1v5mnt12xXeJiYJv_bcctbtL2BCD5MjDi45Hlz6t8vwDNTv1Rv7tgIct', '#=qp$ZVC1r9spi890l$D7IwEd3faoKeWHvv42mVq8wIIWM=', '#=qCoWHlVuoVRMkOzC7RZubJCslkxaEWn9yZiIydECf69$ktj0IPD5wAwC2H5Cc8C$L', '#=qqs1moO$mYaS72OXOWe0Z6GycslEb6e9Ipoy7ppW0O5abIp05ajv8doqdJZHlN3cK'
Source: 3.0.SK TAX INV.exe.400000.4.unpack, u0023u003dqJT4I5hOweIku0024xYFEeDszbikglXCuquUdu0024v9AXtyq2nsu003d.cs	High entropy of concatenated method names: '#=qBeOBlH6CwHFnQdZWWBgZ_pemudZ6CfCVcfOQtgpeG$Y=', '#=q5v5cLSMFBaxiTtOEjscx86gN2ozXlfytiL6UmXnyWtg=', '#=q_XA5h2lVGHLcY9dK754wKGrOjAm6aBbwPxcUJXgJThJUz83kMbCL53G5uuOLP6Rq', '#=qIFfr$DrKqIieRc688$vylAlBsEnx9Z3$TxvrDsPURfM=', '#=qejgvNXJQvgM2GomZsygLjreyguSPQ29pQHqjR_a0dWk=', '#=qCGokdf0OOxeMJLDkXSfc3NPmwygIQ29RjKQWj$wbNGB9C1pPgma_891QiNyTRXcA', '#=qDqyUVyJLXCtYqhZ0$opqkomqhUBn2WCeEEvGAXlNQ$I=', '#=qdImPAY1o3YhbLtukwCQ91cISaeIEWRKSYrGZ3dTVnkY=', '#=qza7O1AHrroJC7yRIJz4wINR_Sgo4hDpQrj_OYfIrlJE=', '#=q6Ct3QmvVLFC7my$dL1uEiHGmXJ5qCuK4WIhDwfhPTFs='
Source: 3.0.SK TAX INV.exe.400000.4.unpack, u0023u003dqWrm21vQ8CBMZP_RBTwpusAu003du003d.cs	High entropy of concatenated method names: '#=qCgU$tDqtOAyz2b$RwfSF7UzBcCAr0rFJWxm16x7Lre0=', '#=qeD3MBfedCIuKIQf9V1u2N3YS4VXE_FOHqw_XAjWtZK8=', '#=q$mvEHEBkZud$AdHPWqsMQnw5Xm5sD4vBSSmqrKuXGOk=', '#=qZaN94n8dM6tBEf$qCdY2kbTZb5BOW8Z134$2tNv7EJs=', '#=qtlZnL8mho$rv1eTFz0Mw9UYFC_yCabEZ0xtVePn6wR5aSHE7ti3UfKg2l7D0_xk8', '#=qVS$QmQjvFfsXSqQAKGSl6HGbkse2SG0XCab4upVjtRJkvhTEk$oIS2I9Zja7id1Q', '#=qxJg7RxTW1v5mnt12xXeJiYJv_bcctbtL2BCD5MjDi45Hlz6t8vwDNTv1Rv7tgIct', '#=qp$ZVC1r9spi890l$D7IwEd3faoKeWHvv42mVq8wIIWM=', '#=qCoWHlVuoVRMkOzC7RZubJCslkxaEWn9yZiIydECf69$ktj0IPD5wAwC2H5Cc8C$L', '#=qqs1moO$mYaS72OXOWe0Z6GycslEb6e9Ipoy7ppW0O5abIp05ajv8doqdJZHlN3cK'

Persistence and Installation Behavior:

Drops PE files

Source: C:\Users\user\Desktop\SK TAX INV.exe

File created: C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe

Jump to dropped file

Hooking and other Techniques for Hiding and Protection:

Hides that the sample has been downloaded from the Internet (zone.identifier)

Source: C:\Users\user\Desktop\SK TAX INV.exe

File opened: C:\Users\user\Desktop\SK TAX INV.exe:Zone.Identifier read attributes | delete

Jump to behavior

Disables application error messsages (SetErrorMode)

Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior

Malware Analysis System Evasion:

Yara detected AntiVM3

Source: Yara match	File source: 0.2.SK TAX INV.exe.29071c8.1.raw.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.2.SK TAX INV.exe.2995604.2.raw.unpack, type: UNPACKEDPE
Source: Yara match	File source: 00000000.00000002.668327294.00000000028A1000.00000004.00000001.sdmp, type: MEMORY
Source: Yara match	File source: 00000000.00000002.668432779.0000000002965000.00000004.00000001.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: SK TAX INV.exe PID: 3980, type: MEMORYSTR

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

Source: SK TAX INV.exe, 00000000.00000002.668327294.00000000028A1000.00000004.00000001.sdmp, SK TAX INV.exe, 00000000.00000002.668432779.0000000002965000.00000004.00000001.sdmp	Binary or memory string: SBIEDLL.DLL
Source: SK TAX INV.exe, 00000000.00000002.668327294.00000000028A1000.00000004.00000001.sdmp, SK TAX INV.exe, 00000000.00000002.668432779.0000000002965000.00000004.00000001.sdmp	Binary or memory string: KERNEL32.DLL.WINE_GET_UNIX_FILE_NAME

May sleep (evasive loops) to hinder dynamic analysis

Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 6680	Thread sleep time: -7378697629483816s >= -30000s			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 6680	Thread sleep time: -240000s >= -30000s			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 6676	Thread sleep count: 684 > 30			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 6680	Thread sleep time: -239859s >= -30000s			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 6676	Thread sleep count: 1731 > 30			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 3184	Thread sleep time: -31962s >= -30000s			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 6680	Thread sleep time: -239742s >= -30000s			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 6680	Thread sleep time: -239641s >= -30000s			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 6680	Thread sleep time: -239500s >= -30000s			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 6680	Thread sleep time: -239390s >= -30000s			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 6680	Thread sleep time: -239280s >= -30000s			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 6680	Thread sleep time: -239155s >= -30000s			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 6680	Thread sleep time: -239047s >= -30000s			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 6680	Thread sleep time: -238937s >= -30000s			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 6680	Thread sleep time: -238828s >= -30000s			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 6680	Thread sleep time: -238717s >= -30000s			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 6680	Thread sleep time: -238250s >= -30000s			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 6680	Thread sleep time: -237406s >= -30000s			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 6680	Thread sleep time: -237063s >= -30000s			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 6680	Thread sleep time: -236750s >= -30000s			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 6680	Thread sleep time: -236422s >= -30000s			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 6680	Thread sleep time: -236312s >= -30000s			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe TID: 5912	Thread sleep time: -13835058055282155s >= -30000s			Jump to behavior

Contains long sleeps (>= 3 min)

Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 922337203685477			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 240000			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 239859			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 239742			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 239641			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 239500			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 239390			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 239280			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 239155			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 239047			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 238937			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 238828			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 238717			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 238250			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 237406			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 237063			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 236750			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 236422			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 236312			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 922337203685477			Jump to behavior

Found a high number of Window / User specific system calls (may be a loop to detect user behavior)

Source: C:\Users\user\Desktop\SK TAX INV.exe	Window / User API: threadDelayed 684			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Window / User API: threadDelayed 1731			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Window / User API: threadDelayed 2909			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Window / User API: threadDelayed 6615			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Window / User API: foregroundWindowGot 671			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Window / User API: foregroundWindowGot 704			Jump to behavior

Queries a list of all running processes

Source: C:\Users\user\Desktop\SK TAX INV.exe

Process information queried: ProcessInformation

Jump to behavior

Contains medium sleeps (>= 30s)

Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 922337203685477			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 240000			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 239859			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 31962			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 239742			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 239641			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 239500			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 239390			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 239280			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 239155			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 239047			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 238937			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 238828			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 238717			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 238250			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 237406			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 237063			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 236750			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 236422			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 236312			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Thread delayed: delay time: 922337203685477			Jump to behavior

May try to detect the virtual machine to hinder analysis (VM artifact strings found in memory)

Source: SK TAX INV.exe, 00000000.00000002.668432779.0000000002965000.00000004.00000001.sdmp	Binary or memory string: VMware SVGA IIBAdd-MpPreference -ExclusionPath "
Source: SK TAX INV.exe, 00000000.00000002.668432779.0000000002965000.00000004.00000001.sdmp	Binary or memory string: InstallPathJC:\PROGRAM FILES\VMWARE\VMWARE TOOLS\
Source: SK TAX INV.exe, 00000000.00000002.668432779.0000000002965000.00000004.00000001.sdmp	Binary or memory string: vmware
Source: SK TAX INV.exe, 00000003.00000003.732893418.00000000012B9000.00000004.00000001.sdmp	Binary or memory string: Hyper-V RAW%SystemRoot%\system32\mswsock.dll
Source: SK TAX INV.exe, 00000000.00000002.668432779.0000000002965000.00000004.00000001.sdmp	Binary or memory string: VMWAREDSOFTWARE\VMware, Inc.\VMware Tools

Anti Debugging:

Enables debug privileges

Source: C:\Users\user\Desktop\SK TAX INV.exe

Process token adjusted: Debug

Jump to behavior

Creates guard pages, often used to prevent reverse engineering and debugging

Source: C:\Users\user\Desktop\SK TAX INV.exe

Memory allocated: page read and write | page guard

Jump to behavior

HIPS / PFW / Operating System Protection Evasion:

Creates a process in suspended mode (likely to inject code)

Source: C:\Users\user\Desktop\SK TAX INV.exe

Process created: C:\Users\user\Desktop\SK TAX INV.exe C:\Users\user\Desktop\SK TAX INV.exe

Jump to behavior

Language, Device and Operating System Detection:

Queries the volume information (name, serial number etc) of a device

Source: C:\Users\user\Desktop\SK TAX INV.exe	Queries volume information: C:\Users\user\Desktop\SK TAX INV.exe VolumeInformation			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.Drawing\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Drawing.dll VolumeInformation			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.Data.Linq\v4.0_4.0.0.0__b77a5c561934e089\System.Data.Linq.dll VolumeInformation			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_32\System.Data\v4.0_4.0.0.0__b77a5c561934e089\System.Data.dll VolumeInformation			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_32\System.Data\v4.0_4.0.0.0__b77a5c561934e089\System.Data.dll VolumeInformation			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_32\System.Data\v4.0_4.0.0.0__b77a5c561934e089\System.Data.dll VolumeInformation			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_32\System.Transactions\v4.0_4.0.0.0__b77a5c561934e089\System.Transactions.dll VolumeInformation			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_32\System.Transactions\v4.0_4.0.0.0__b77a5c561934e089\System.Transactions.dll VolumeInformation			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_32\System.Transactions\v4.0_4.0.0.0__b77a5c561934e089\System.Transactions.dll VolumeInformation			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\Microsoft.VisualBasic\v4.0_10.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualBasic.dll VolumeInformation			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.Windows.Forms\v4.0_4.0.0.0__b77a5c561934e089\System.Windows.Forms.dll VolumeInformation			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Queries volume information: C:\Users\user\Desktop\SK TAX INV.exe VolumeInformation			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.Windows.Forms\v4.0_4.0.0.0__b77a5c561934e089\System.Windows.Forms.dll VolumeInformation			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.Drawing\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Drawing.dll VolumeInformation			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\Microsoft.VisualBasic\v4.0_10.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualBasic.dll VolumeInformation			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\Accessibility\v4.0_4.0.0.0__b03f5f7f11d50a3a\Accessibility.dll VolumeInformation			Jump to behavior
Source: C:\Users\user\Desktop\SK TAX INV.exe	Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.Management\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Management.dll VolumeInformation			Jump to behavior

Queries the cryptographic machine GUID

Source: C:\Users\user\Desktop\SK TAX INV.exe

Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography MachineGuid

Jump to behavior

Lowering of HIPS / PFW / Operating System Security Settings:

Checks if Antivirus/Antispyware/Firewall program is installed (via WMI)

Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiVirusProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiSpywareProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM FirewallProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiVirusProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiSpywareProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM FirewallProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiVirusProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiSpywareProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM FirewallProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiVirusProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiSpywareProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM FirewallProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiVirusProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiSpywareProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM FirewallProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiVirusProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiSpywareProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM FirewallProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiVirusProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiSpywareProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM FirewallProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiVirusProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiSpywareProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM FirewallProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiVirusProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiSpywareProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM FirewallProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiVirusProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiSpywareProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM FirewallProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiVirusProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiSpywareProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM FirewallProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiVirusProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiSpywareProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM FirewallProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiVirusProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiSpywareProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM FirewallProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiVirusProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiSpywareProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM FirewallProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiVirusProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiSpywareProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM FirewallProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiVirusProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiSpywareProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM FirewallProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiVirusProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM AntiSpywareProduct
Source: C:\Users\user\Desktop\SK TAX INV.exe	WMI Queries: IWbemServices::ExecQuery - ROOT\SecurityCenter2 : SELECT DisplayName FROM FirewallProduct

Stealing of Sensitive Information:

Yara detected Nanocore RAT

Source: Yara match	File source: 3.0.SK TAX INV.exe.400000.10.unpack, type: UNPACKEDPE
Source: Yara match	File source: 3.0.SK TAX INV.exe.400000.8.unpack, type: UNPACKEDPE
Source: Yara match	File source: 3.0.SK TAX INV.exe.400000.12.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.2.SK TAX INV.exe.3b43e10.5.unpack, type: UNPACKEDPE
Source: Yara match	File source: 3.0.SK TAX INV.exe.400000.6.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.2.SK TAX INV.exe.3b113f0.6.unpack, type: UNPACKEDPE
Source: Yara match	File source: 3.0.SK TAX INV.exe.400000.4.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.2.SK TAX INV.exe.3b43e10.5.raw.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.2.SK TAX INV.exe.3b113f0.6.raw.unpack, type: UNPACKEDPE
Source: Yara match	File source: 00000003.00000000.665221730.0000000000402000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match	File source: 00000003.00000000.665589656.0000000000402000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match	File source: 00000003.00000000.665941289.0000000000402000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match	File source: 00000003.00000000.666335348.0000000000402000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match	File source: 00000000.00000002.670484046.0000000003B11000.00000004.00000001.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: SK TAX INV.exe PID: 3980, type: MEMORYSTR
Source: Yara match	File source: Process Memory Space: SK TAX INV.exe PID: 6636, type: MEMORYSTR

Remote Access Functionality:

Detected Nanocore Rat

Source: SK TAX INV.exe, 00000000.00000002.670484046.0000000003B11000.00000004.00000001.sdmp	String found in binary or memory: NanoCore.ClientPluginHost
Source: SK TAX INV.exe, 00000003.00000000.665221730.0000000000402000.00000040.00000001.sdmp	String found in binary or memory: NanoCore.ClientPluginHost
Source: SK TAX INV.exe, 00000003.00000003.684774036.00000000012F3000.00000004.00000001.sdmp	String found in binary or memory: NanoCore.ClientPluginHost

Yara detected Nanocore RAT

Source: Yara match	File source: 3.0.SK TAX INV.exe.400000.10.unpack, type: UNPACKEDPE
Source: Yara match	File source: 3.0.SK TAX INV.exe.400000.8.unpack, type: UNPACKEDPE
Source: Yara match	File source: 3.0.SK TAX INV.exe.400000.12.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.2.SK TAX INV.exe.3b43e10.5.unpack, type: UNPACKEDPE
Source: Yara match	File source: 3.0.SK TAX INV.exe.400000.6.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.2.SK TAX INV.exe.3b113f0.6.unpack, type: UNPACKEDPE
Source: Yara match	File source: 3.0.SK TAX INV.exe.400000.4.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.2.SK TAX INV.exe.3b43e10.5.raw.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.2.SK TAX INV.exe.3b113f0.6.raw.unpack, type: UNPACKEDPE
Source: Yara match	File source: 00000003.00000000.665221730.0000000000402000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match	File source: 00000003.00000000.665589656.0000000000402000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match	File source: 00000003.00000000.665941289.0000000000402000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match	File source: 00000003.00000000.666335348.0000000000402000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match	File source: 00000000.00000002.670484046.0000000003B11000.00000004.00000001.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: SK TAX INV.exe PID: 3980, type: MEMORYSTR
Source: Yara match	File source: Process Memory Space: SK TAX INV.exe PID: 6636, type: MEMORYSTR