Windows Analysis Report
WCcNzb83Y3.exe

Overview

General Information

Sample name: WCcNzb83Y3.exe
renamed because original name is a hash value
Original sample name: 24D8F60111E8DB49789E0582E3F69146.exe
Analysis ID: 1428878
MD5: 24d8f60111e8db49789e0582e3f69146
SHA1: 70d1eb3898bbf2efce3f70d7e8782546a01de251
SHA256: 0397446de827fc7c5e161061fafb5e1a72847a9d653a675c7b2ae7b687c620c8
Tags: CobaltStrikeexe
Infos:

Detection

CobaltStrike
Score: 100
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
Yara detected CobaltStrike
Yara detected Powershell download and execute
C2 URLs / IPs found in malware configuration
Contains functionality to detect sleep reduction / modifications
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to check if a debugger is running (OutputDebugString,GetLastError)
Contains functionality to dynamically determine API calls
Contains functionality to execute programs as a different user
Contains functionality to launch a process as a different user
Contains functionality to open a port and listen for incoming connection (possibly a backdoor)
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Detected TCP or UDP traffic on non-standard ports
Detected potential crypto function
Extensive use of GetProcAddress (often used to hide API calls)
Found large amount of non-executed APIs
Internet Provider seen in connection with other malware
May check if the current machine is a sandbox (GetTickCount - Sleep)
May sleep (evasive loops) to hinder dynamic analysis
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
Sample execution stops while process was sleeping (likely an evasion)
Uses Microsoft's Enhanced Cryptographic Provider
Uses code obfuscation techniques (call, push, ret)
Yara signature match

Classification

Name Description Attribution Blogpost URLs Link
Cobalt Strike, CobaltStrike Cobalt Strike is a paid penetration testing product that allows an attacker to deploy an agent named 'Beacon' on the victim machine. Beacon includes a wealth of functionality to the attacker, including, but not limited to command execution, key logging, file transfer, SOCKS proxying, privilege escalation, mimikatz, port scanning and lateral movement. Beacon is in-memory/file-less, in that it consists of stageless or multi-stage shellcode that once loaded by exploiting a vulnerability or executing a shellcode loader, will reflectively load itself into the memory of a process without touching the disk. It supports C2 and staging over HTTP, HTTPS, DNS, SMB named pipes as well as forward and reverse TCP; Beacons can be daisy-chained. Cobalt Strike comes with a toolkit for developing shellcode loaders, called Artifact Kit.The Beacon implant has become popular amongst targeted attackers and criminal users as it is well written, stable, and highly customizable.
  • APT 29
  • APT32
  • APT41
  • AQUATIC PANDA
  • Anunak
  • Cobalt
  • Codoso
  • CopyKittens
  • DarkHydrus
  • FIN6
  • FIN7
  • Leviathan
  • Mustang Panda
  • Shell Crew
  • Stone Panda
  • TianWu
  • UNC1878
  • UNC2452
  • Winnti Umbrella
 https://malpedia.caad.fkie.fraunhofer.de/details/win.cobalt_strike

AV Detection
barindex
Found malware configuration
Source: 00000000.00000002.3932728110.000000000014A000.00000004.00000010.00020000.00000000.sdmp Malware Configuration Extractor: CobaltStrike {"C2Server": "http://47.120.39.182:63306/Gs3p", "User Agent": "User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727)\r\n"}
Multi AV Scanner detection for submitted file
Source: WCcNzb83Y3.exe ReversingLabs: Detection: 55%
Uses Microsoft's Enhanced Cryptographic Provider
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02B91184 CryptAcquireContextA,CryptAcquireContextA,CryptGenRandom,CryptReleaseContext, 0_2_02B91184
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BBE020 CryptGenRandom, 0_2_02BBE020
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BA0ED4 malloc,GetCurrentDirectoryA,FindFirstFileA,GetLastError,free,free,FileTimeToSystemTime,SystemTimeToTzSpecificLocalTime,FindNextFileA,FindClose, 0_2_02BA0ED4
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BA779C malloc,_snprintf,FindFirstFileA,free,malloc,_snprintf,free,FindNextFileA,FindClose, 0_2_02BA779C

Networking
barindex
Snort IDS alert for network traffic
Source: Traffic Snort IDS: 2035651 ET TROJAN Meterpreter or Other Reverse Shell SSL Cert 47.120.39.182:63306 -> 192.168.2.6:49710
C2 URLs / IPs found in malware configuration
Source: Malware configuration extractor URLs: http://47.120.39.182:63306/Gs3p
Detected TCP or UDP traffic on non-standard ports
Source: global traffic TCP traffic: 192.168.2.6:49710 -> 47.120.39.182:63306
Internet Provider seen in connection with other malware
Source: Joe Sandbox View ASN Name: CNNIC-ALIBABA-CN-NET-APHangzhouAlibabaAdvertisingCoLtd CNNIC-ALIBABA-CN-NET-APHangzhouAlibabaAdvertisingCoLtd
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: unknown TCP traffic detected without corresponding DNS query: 47.120.39.182
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02B9E3A0 _snprintf,_snprintf,_snprintf,HttpOpenRequestA,HttpSendRequestA,InternetQueryDataAvailable,InternetCloseHandle,InternetReadFile,InternetCloseHandle, 0_2_02B9E3A0
Source: WCcNzb83Y3.exe, 00000000.00000002.3933968079.00000000030B0000.00000040.00001000.00020000.00000000.sdmp String found in binary or memory: http://127.0.0.1:%u/
Source: WCcNzb83Y3.exe, 00000000.00000003.2113339804.0000000002B0F000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: http://ctldl.windowsupdate.com/(
Source: WCcNzb83Y3.exe, 00000000.00000003.2113339804.0000000002B0F000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: http://ctldl.windowsupdate.com/S
Source: WCcNzb83Y3.exe, 00000000.00000002.3932845354.000000000057E000.00000004.00000020.00020000.00000000.sdmp, WCcNzb83Y3.exe, 00000000.00000003.2691186059.0000000000565000.00000004.00000020.00020000.00000000.sdmp, WCcNzb83Y3.exe, 00000000.00000002.3932845354.0000000000565000.00000004.00000020.00020000.00000000.sdmp, WCcNzb83Y3.exe, 00000000.00000003.2691084818.000000000057E000.00000004.00000020.00020000.00000000.sdmp, 77EC63BDA74BD0D0E0426DC8F80085060.0.dr String found in binary or memory: http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab
Source: WCcNzb83Y3.exe, 00000000.00000003.2777326280.00000000005AA000.00000004.00000020.00020000.00000000.sdmp, WCcNzb83Y3.exe, 00000000.00000002.3932845354.00000000005AA000.00000004.00000020.00020000.00000000.sdmp, WCcNzb83Y3.exe, 00000000.00000003.2777187521.00000000005A7000.00000004.00000020.00020000.00000000.sdmp, WCcNzb83Y3.exe, 00000000.00000003.2691084818.000000000057E000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab2
Source: WCcNzb83Y3.exe, 00000000.00000003.2113339804.0000000002B0F000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab?ff3af2acb9340
Source: WCcNzb83Y3.exe, 00000000.00000003.2691186059.0000000000565000.00000004.00000020.00020000.00000000.sdmp, WCcNzb83Y3.exe, 00000000.00000002.3932845354.0000000000565000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cabL
Source: WCcNzb83Y3.exe, 00000000.00000003.2691186059.0000000000544000.00000004.00000020.00020000.00000000.sdmp, WCcNzb83Y3.exe, 00000000.00000002.3932845354.0000000000544000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en1
Source: WCcNzb83Y3.exe, 00000000.00000003.2113339804.0000000002B0F000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: http://ctldl.windowsupdate.com/t
Source: WCcNzb83Y3.exe, 00000000.00000003.2691186059.0000000000565000.00000004.00000020.00020000.00000000.sdmp, WCcNzb83Y3.exe, 00000000.00000002.3932845354.0000000000565000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: https://47.120.39.182/
Source: WCcNzb83Y3.exe, 00000000.00000002.3932845354.00000000004FE000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: https://47.120.39.182/#
Source: WCcNzb83Y3.exe, 00000000.00000003.2691186059.0000000000544000.00000004.00000020.00020000.00000000.sdmp, WCcNzb83Y3.exe, 00000000.00000002.3932845354.0000000000544000.00000004.00000020.00020000.00000000.sdmp, WCcNzb83Y3.exe, 00000000.00000002.3932845354.00000000004FE000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: https://47.120.39.182:63306/Gs3p
Source: WCcNzb83Y3.exe, 00000000.00000003.2691186059.0000000000544000.00000004.00000020.00020000.00000000.sdmp, WCcNzb83Y3.exe, 00000000.00000002.3932845354.0000000000544000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: https://47.120.39.182:63306/Gs3p%
Source: WCcNzb83Y3.exe, 00000000.00000002.3932845354.00000000004FE000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: https://47.120.39.182:63306/Gs3pM
Source: WCcNzb83Y3.exe, 00000000.00000002.3932845354.000000000057E000.00000004.00000020.00020000.00000000.sdmp, WCcNzb83Y3.exe, 00000000.00000002.3933344802.0000000002B7A000.00000004.00000020.00020000.00000000.sdmp, WCcNzb83Y3.exe, 00000000.00000003.2690497093.0000000002B01000.00000004.00000020.00020000.00000000.sdmp, WCcNzb83Y3.exe, 00000000.00000003.2777168019.0000000002B7A000.00000004.00000020.00020000.00000000.sdmp, WCcNzb83Y3.exe, 00000000.00000003.2690620417.0000000002B7A000.00000004.00000020.00020000.00000000.sdmp, WCcNzb83Y3.exe, 00000000.00000002.3933344802.0000000002B01000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: https://47.120.39.182:63306/cx

System Summary
barindex
Malicious sample detected (through community Yara rule)
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.unpack, type: UNPACKEDPE Matched rule: Attempts to detect Cobalt Strike based on strings found in BEACON Author: unknown
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.unpack, type: UNPACKEDPE Matched rule: Identifies CobaltStrike via unidentified function code Author: unknown
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.unpack, type: UNPACKEDPE Matched rule: Rule for beacon reflective loader Author: unknown
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.unpack, type: UNPACKEDPE Matched rule: Detects Meterpreter Beacon - file K5om.dll Author: Florian Roth
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.unpack, type: UNPACKEDPE Matched rule: Detects unmodified CobaltStrike beacon DLL Author: yara@s3c.za.net
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.unpack, type: UNPACKEDPE Matched rule: Detects Cobalt Strike sample from Leviathan report Author: Florian Roth
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.unpack, type: UNPACKEDPE Matched rule: Detects Cobalt Strike loader Author: @VK_Intel
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.unpack, type: UNPACKEDPE Matched rule: Detects reflective loader (Cobalt Strike) used in Operation Wilted Tulip Author: Florian Roth
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.unpack, type: UNPACKEDPE Matched rule: detects Reflective DLL injection artifacts Author: ditekSHen
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.unpack, type: UNPACKEDPE Matched rule: CobaltStrike payload Author: ditekSHen
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.raw.unpack, type: UNPACKEDPE Matched rule: Attempts to detect Cobalt Strike based on strings found in BEACON Author: unknown
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.raw.unpack, type: UNPACKEDPE Matched rule: Identifies CobaltStrike via unidentified function code Author: unknown
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.raw.unpack, type: UNPACKEDPE Matched rule: Rule for beacon reflective loader Author: unknown
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.raw.unpack, type: UNPACKEDPE Matched rule: Detects Meterpreter Beacon - file K5om.dll Author: Florian Roth
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.raw.unpack, type: UNPACKEDPE Matched rule: Detects unmodified CobaltStrike beacon DLL Author: yara@s3c.za.net
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.raw.unpack, type: UNPACKEDPE Matched rule: Detects Cobalt Strike sample from Leviathan report Author: Florian Roth
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.raw.unpack, type: UNPACKEDPE Matched rule: Detects Cobalt Strike loader Author: @VK_Intel
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.raw.unpack, type: UNPACKEDPE Matched rule: Detects reflective loader (Cobalt Strike) used in Operation Wilted Tulip Author: Florian Roth
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.raw.unpack, type: UNPACKEDPE Matched rule: CobaltStrike payload Author: ditekSHen
Source: 00000000.00000002.3932728110.000000000014A000.00000004.00000010.00020000.00000000.sdmp, type: MEMORY Matched rule: Identifies the API address lookup function leverage by metasploit shellcode Author: unknown
Source: 00000000.00000002.3932728110.000000000014A000.00000004.00000010.00020000.00000000.sdmp, type: MEMORY Matched rule: Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families. Author: unknown
Source: 00000000.00000002.3933717673.0000000002BF0000.00000020.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Rule for beacon sleep obfuscation routine Author: unknown
Source: 00000000.00000002.3932770819.00000000001B0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Identifies the API address lookup function leverage by metasploit shellcode Author: unknown
Source: 00000000.00000002.3932770819.00000000001B0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families. Author: unknown
Source: 00000000.00000002.3933486788.0000000002B90000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Attempts to detect Cobalt Strike based on strings found in BEACON Author: unknown
Source: 00000000.00000002.3933486788.0000000002B90000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Identifies CobaltStrike via unidentified function code Author: unknown
Source: 00000000.00000002.3933486788.0000000002B90000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Rule for beacon reflective loader Author: unknown
Source: 00000000.00000002.3933486788.0000000002B90000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Detects Meterpreter Beacon - file K5om.dll Author: Florian Roth
Source: 00000000.00000002.3933486788.0000000002B90000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Detects unmodified CobaltStrike beacon DLL Author: yara@s3c.za.net
Source: 00000000.00000002.3933486788.0000000002B90000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Detects Cobalt Strike sample from Leviathan report Author: Florian Roth
Source: 00000000.00000002.3933486788.0000000002B90000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Detects Cobalt Strike loader Author: @VK_Intel
Source: 00000000.00000002.3933486788.0000000002B90000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Detects reflective loader (Cobalt Strike) used in Operation Wilted Tulip Author: Florian Roth
Source: 00000000.00000002.3933486788.0000000002B90000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: CobaltStrike payload Author: ditekSHen
Source: 00000000.00000002.3933968079.00000000030B0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Attempts to detect Cobalt Strike based on strings found in BEACON Author: unknown
Source: 00000000.00000002.3933968079.00000000030B0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Identifies CobaltStrike via unidentified function code Author: unknown
Source: 00000000.00000002.3933968079.00000000030B0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Rule for beacon sleep obfuscation routine Author: unknown
Source: 00000000.00000002.3933968079.00000000030B0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Rule for beacon reflective loader Author: unknown
Source: 00000000.00000002.3933968079.00000000030B0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Detects unmodified CobaltStrike beacon DLL Author: yara@s3c.za.net
Source: 00000000.00000002.3933968079.00000000030B0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Detects reflective loader (Cobalt Strike) used in Operation Wilted Tulip Author: Florian Roth
Source: 00000000.00000002.3933968079.00000000030B0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Trojan_Raw_Generic_4 Author: unknown
Source: Process Memory Space: WCcNzb83Y3.exe PID: 5896, type: MEMORYSTR Matched rule: Attempts to detect Cobalt Strike based on strings found in BEACON Author: unknown
Source: Process Memory Space: WCcNzb83Y3.exe PID: 5896, type: MEMORYSTR Matched rule: Detects unmodified CobaltStrike beacon DLL Author: yara@s3c.za.net
Source: Process Memory Space: WCcNzb83Y3.exe PID: 5896, type: MEMORYSTR Matched rule: Detects reflective loader (Cobalt Strike) used in Operation Wilted Tulip Author: Florian Roth
Contains functionality to launch a process as a different user
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BBE080 CreateProcessAsUserA, 0_2_02BBE080
Detected potential crypto function
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02B9D780 0_2_02B9D780
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BB82B0 0_2_02BB82B0
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BB22B4 0_2_02BB22B4
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02B9A280 0_2_02B9A280
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BB9AF0 0_2_02BB9AF0
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BAE2C8 0_2_02BAE2C8
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BADB5C 0_2_02BADB5C
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BA61A8 0_2_02BA61A8
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BB9180 0_2_02BB9180
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BA01E8 0_2_02BA01E8
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BBB100 0_2_02BBB100
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BAC148 0_2_02BAC148
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BB8E97 0_2_02BB8E97
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BACF14 0_2_02BACF14
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BA6C98 0_2_02BA6C98
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BB745C 0_2_02BB745C
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BAED3C 0_2_02BAED3C
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02B99D6C 0_2_02B99D6C
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_001B010D 0_2_001B010D
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_030BCBC7 0_2_030BCBC7
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_030CE183 0_2_030CE183
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_030CD70F 0_2_030CD70F
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_030CCFA3 0_2_030CCFA3
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_030CB58F 0_2_030CB58F
Yara signature match
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.unpack, type: UNPACKEDPE Matched rule: Windows_Trojan_CobaltStrike_ee756db7 os = windows, severity = x86, description = Attempts to detect Cobalt Strike based on strings found in BEACON, creation_date = 2021-03-23, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.CobaltStrike, fingerprint = e589cc259644bc75d6c4db02a624c978e855201cf851c0d87f0d54685ce68f71, id = ee756db7-e177-41f0-af99-c44646d334f7, last_modified = 2021-08-23
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.unpack, type: UNPACKEDPE Matched rule: Windows_Trojan_CobaltStrike_663fc95d os = windows, severity = x86, description = Identifies CobaltStrike via unidentified function code, creation_date = 2021-04-01, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.CobaltStrike, fingerprint = d0f781d7e485a7ecfbbfd068601e72430d57ef80fc92a993033deb1ddcee5c48, id = 663fc95d-2472-4d52-ad75-c5d86cfc885f, last_modified = 2021-12-17
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.unpack, type: UNPACKEDPE Matched rule: Windows_Trojan_CobaltStrike_f0b627fc reference_sample = b362951abd9d96d5ec15d281682fa1c8fe8f8e4e2f264ca86f6b061af607f79b, os = windows, severity = x86, description = Rule for beacon reflective loader, creation_date = 2021-10-21, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.CobaltStrike, fingerprint = fbc94bedd50b5b943553dd438a183a1e763c098a385ac3a4fc9ff24ee30f91e1, id = f0b627fc-97cd-42cb-9eae-1efb0672762d, last_modified = 2022-01-13
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.unpack, type: UNPACKEDPE Matched rule: Beacon_K5om date = 2017-06-07, hash1 = e3494fd2cc7e9e02cff76841630892e4baed34a3e1ef2b9ae4e2608f9a4d7be9, author = Florian Roth, description = Detects Meterpreter Beacon - file K5om.dll, reference = https://www.fireeye.com/blog/threat-research/2017/06/phished-at-the-request-of-counsel.html, license = https://creativecommons.org/licenses/by-nc/4.0/
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.unpack, type: UNPACKEDPE Matched rule: CobaltStrike_Unmodifed_Beacon date = 2019-08-16, author = yara@s3c.za.net, description = Detects unmodified CobaltStrike beacon DLL
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.unpack, type: UNPACKEDPE Matched rule: Leviathan_CobaltStrike_Sample_1 date = 2017-10-18, hash1 = 5860ddc428ffa900258207e9c385f843a3472f2fbf252d2f6357d458646cf362, author = Florian Roth, description = Detects Cobalt Strike sample from Leviathan report, reference = https://goo.gl/MZ7dRg, license = https://creativecommons.org/licenses/by-nc/4.0/
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.unpack, type: UNPACKEDPE Matched rule: crime_win32_csbeacon_1 date = 2020-03-16, author = @VK_Intel, description = Detects Cobalt Strike loader, reference = https://twitter.com/VK_Intel/status/1239632822358474753
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.unpack, type: UNPACKEDPE Matched rule: WiltedTulip_ReflectiveLoader date = 2017-07-23, hash5 = eee430003e7d59a431d1a60d45e823d4afb0d69262cc5e0c79f345aa37333a89, hash4 = cf7c754ceece984e6fa0d799677f50d93133db609772c7a2226e7746e6d046f0, hash3 = a159a9bfb938de686f6aced37a2f7fa62d6ff5e702586448884b70804882b32f, hash2 = 1f52d643e8e633026db73db55eb1848580de00a203ee46263418f02c6bdb8c7a, hash1 = 1097bf8f5b832b54c81c1708327a54a88ca09f7bdab4571f1a335cc26bbd7904, author = Florian Roth, description = Detects reflective loader (Cobalt Strike) used in Operation Wilted Tulip, reference = http://www.clearskysec.com/tulip, license = https://creativecommons.org/licenses/by-nc/4.0/
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.unpack, type: UNPACKEDPE Matched rule: INDICATOR_SUSPICIOUS_ReflectiveLoader author = ditekSHen, description = detects Reflective DLL injection artifacts
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.unpack, type: UNPACKEDPE Matched rule: MALWARE_Win_CobaltStrike author = ditekSHen, description = CobaltStrike payload
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.raw.unpack, type: UNPACKEDPE Matched rule: Windows_Trojan_CobaltStrike_ee756db7 os = windows, severity = x86, description = Attempts to detect Cobalt Strike based on strings found in BEACON, creation_date = 2021-03-23, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.CobaltStrike, fingerprint = e589cc259644bc75d6c4db02a624c978e855201cf851c0d87f0d54685ce68f71, id = ee756db7-e177-41f0-af99-c44646d334f7, last_modified = 2021-08-23
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.raw.unpack, type: UNPACKEDPE Matched rule: Windows_Trojan_CobaltStrike_663fc95d os = windows, severity = x86, description = Identifies CobaltStrike via unidentified function code, creation_date = 2021-04-01, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.CobaltStrike, fingerprint = d0f781d7e485a7ecfbbfd068601e72430d57ef80fc92a993033deb1ddcee5c48, id = 663fc95d-2472-4d52-ad75-c5d86cfc885f, last_modified = 2021-12-17
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.raw.unpack, type: UNPACKEDPE Matched rule: Windows_Trojan_CobaltStrike_f0b627fc reference_sample = b362951abd9d96d5ec15d281682fa1c8fe8f8e4e2f264ca86f6b061af607f79b, os = windows, severity = x86, description = Rule for beacon reflective loader, creation_date = 2021-10-21, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.CobaltStrike, fingerprint = fbc94bedd50b5b943553dd438a183a1e763c098a385ac3a4fc9ff24ee30f91e1, id = f0b627fc-97cd-42cb-9eae-1efb0672762d, last_modified = 2022-01-13
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.raw.unpack, type: UNPACKEDPE Matched rule: Beacon_K5om date = 2017-06-07, hash1 = e3494fd2cc7e9e02cff76841630892e4baed34a3e1ef2b9ae4e2608f9a4d7be9, author = Florian Roth, description = Detects Meterpreter Beacon - file K5om.dll, reference = https://www.fireeye.com/blog/threat-research/2017/06/phished-at-the-request-of-counsel.html, license = https://creativecommons.org/licenses/by-nc/4.0/
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.raw.unpack, type: UNPACKEDPE Matched rule: CobaltStrike_Unmodifed_Beacon date = 2019-08-16, author = yara@s3c.za.net, description = Detects unmodified CobaltStrike beacon DLL
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.raw.unpack, type: UNPACKEDPE Matched rule: Leviathan_CobaltStrike_Sample_1 date = 2017-10-18, hash1 = 5860ddc428ffa900258207e9c385f843a3472f2fbf252d2f6357d458646cf362, author = Florian Roth, description = Detects Cobalt Strike sample from Leviathan report, reference = https://goo.gl/MZ7dRg, license = https://creativecommons.org/licenses/by-nc/4.0/
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.raw.unpack, type: UNPACKEDPE Matched rule: crime_win32_csbeacon_1 date = 2020-03-16, author = @VK_Intel, description = Detects Cobalt Strike loader, reference = https://twitter.com/VK_Intel/status/1239632822358474753
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.raw.unpack, type: UNPACKEDPE Matched rule: WiltedTulip_ReflectiveLoader date = 2017-07-23, hash5 = eee430003e7d59a431d1a60d45e823d4afb0d69262cc5e0c79f345aa37333a89, hash4 = cf7c754ceece984e6fa0d799677f50d93133db609772c7a2226e7746e6d046f0, hash3 = a159a9bfb938de686f6aced37a2f7fa62d6ff5e702586448884b70804882b32f, hash2 = 1f52d643e8e633026db73db55eb1848580de00a203ee46263418f02c6bdb8c7a, hash1 = 1097bf8f5b832b54c81c1708327a54a88ca09f7bdab4571f1a335cc26bbd7904, author = Florian Roth, description = Detects reflective loader (Cobalt Strike) used in Operation Wilted Tulip, reference = http://www.clearskysec.com/tulip, license = https://creativecommons.org/licenses/by-nc/4.0/
Source: 0.2.WCcNzb83Y3.exe.2b90000.1.raw.unpack, type: UNPACKEDPE Matched rule: MALWARE_Win_CobaltStrike author = ditekSHen, description = CobaltStrike payload
Source: 00000000.00000002.3932728110.000000000014A000.00000004.00000010.00020000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_Metasploit_7bc0f998 os = windows, severity = x86, description = Identifies the API address lookup function leverage by metasploit shellcode, creation_date = 2021-03-23, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Metasploit, fingerprint = fdb5c665503f07b2fc1ed7e4e688295e1222a500bfb68418661db60c8e75e835, id = 7bc0f998-7014-4883-8a56-d5ee00c15aed, last_modified = 2021-08-23
Source: 00000000.00000002.3932728110.000000000014A000.00000004.00000010.00020000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_Metasploit_c9773203 os = windows, severity = x86, description = Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families., creation_date = 2021-04-07, scan_context = file, memory, reference = https://github.com/rapid7/metasploit-framework/blob/04e8752b9b74cbaad7cb0ea6129c90e3172580a2/external/source/shellcode/windows/x64/src/block/block_api.asm, license = Elastic License v2, threat_name = Windows.Trojan.Metasploit, fingerprint = afde93eeb14b4d0c182f475a22430f101394938868741ffa06445e478b6ece36, id = c9773203-6d1e-4246-a1e0-314217e0207a, last_modified = 2021-08-23
Source: 00000000.00000002.3933717673.0000000002BF0000.00000020.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_CobaltStrike_b54b94ac reference_sample = 36d32b1ed967f07a4bd19f5e671294d5359009c04835601f2cc40fb8b54f6a2a, os = windows, severity = x86, description = Rule for beacon sleep obfuscation routine, creation_date = 2021-10-21, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.CobaltStrike, fingerprint = 2344dd7820656f18cfb774a89d89f5ab65d46cc7761c1f16b7e768df66aa41c8, id = b54b94ac-6ef8-4ee9-a8a6-f7324c1974ca, last_modified = 2022-01-13
Source: 00000000.00000002.3932770819.00000000001B0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_Metasploit_7bc0f998 os = windows, severity = x86, description = Identifies the API address lookup function leverage by metasploit shellcode, creation_date = 2021-03-23, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Metasploit, fingerprint = fdb5c665503f07b2fc1ed7e4e688295e1222a500bfb68418661db60c8e75e835, id = 7bc0f998-7014-4883-8a56-d5ee00c15aed, last_modified = 2021-08-23
Source: 00000000.00000002.3932770819.00000000001B0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_Metasploit_c9773203 os = windows, severity = x86, description = Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families., creation_date = 2021-04-07, scan_context = file, memory, reference = https://github.com/rapid7/metasploit-framework/blob/04e8752b9b74cbaad7cb0ea6129c90e3172580a2/external/source/shellcode/windows/x64/src/block/block_api.asm, license = Elastic License v2, threat_name = Windows.Trojan.Metasploit, fingerprint = afde93eeb14b4d0c182f475a22430f101394938868741ffa06445e478b6ece36, id = c9773203-6d1e-4246-a1e0-314217e0207a, last_modified = 2021-08-23
Source: 00000000.00000002.3933486788.0000000002B90000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_CobaltStrike_ee756db7 os = windows, severity = x86, description = Attempts to detect Cobalt Strike based on strings found in BEACON, creation_date = 2021-03-23, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.CobaltStrike, fingerprint = e589cc259644bc75d6c4db02a624c978e855201cf851c0d87f0d54685ce68f71, id = ee756db7-e177-41f0-af99-c44646d334f7, last_modified = 2021-08-23
Source: 00000000.00000002.3933486788.0000000002B90000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_CobaltStrike_663fc95d os = windows, severity = x86, description = Identifies CobaltStrike via unidentified function code, creation_date = 2021-04-01, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.CobaltStrike, fingerprint = d0f781d7e485a7ecfbbfd068601e72430d57ef80fc92a993033deb1ddcee5c48, id = 663fc95d-2472-4d52-ad75-c5d86cfc885f, last_modified = 2021-12-17
Source: 00000000.00000002.3933486788.0000000002B90000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_CobaltStrike_f0b627fc reference_sample = b362951abd9d96d5ec15d281682fa1c8fe8f8e4e2f264ca86f6b061af607f79b, os = windows, severity = x86, description = Rule for beacon reflective loader, creation_date = 2021-10-21, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.CobaltStrike, fingerprint = fbc94bedd50b5b943553dd438a183a1e763c098a385ac3a4fc9ff24ee30f91e1, id = f0b627fc-97cd-42cb-9eae-1efb0672762d, last_modified = 2022-01-13
Source: 00000000.00000002.3933486788.0000000002B90000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Beacon_K5om date = 2017-06-07, hash1 = e3494fd2cc7e9e02cff76841630892e4baed34a3e1ef2b9ae4e2608f9a4d7be9, author = Florian Roth, description = Detects Meterpreter Beacon - file K5om.dll, reference = https://www.fireeye.com/blog/threat-research/2017/06/phished-at-the-request-of-counsel.html, license = https://creativecommons.org/licenses/by-nc/4.0/
Source: 00000000.00000002.3933486788.0000000002B90000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: CobaltStrike_Unmodifed_Beacon date = 2019-08-16, author = yara@s3c.za.net, description = Detects unmodified CobaltStrike beacon DLL
Source: 00000000.00000002.3933486788.0000000002B90000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Leviathan_CobaltStrike_Sample_1 date = 2017-10-18, hash1 = 5860ddc428ffa900258207e9c385f843a3472f2fbf252d2f6357d458646cf362, author = Florian Roth, description = Detects Cobalt Strike sample from Leviathan report, reference = https://goo.gl/MZ7dRg, license = https://creativecommons.org/licenses/by-nc/4.0/
Source: 00000000.00000002.3933486788.0000000002B90000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: crime_win32_csbeacon_1 date = 2020-03-16, author = @VK_Intel, description = Detects Cobalt Strike loader, reference = https://twitter.com/VK_Intel/status/1239632822358474753
Source: 00000000.00000002.3933486788.0000000002B90000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: WiltedTulip_ReflectiveLoader date = 2017-07-23, hash5 = eee430003e7d59a431d1a60d45e823d4afb0d69262cc5e0c79f345aa37333a89, hash4 = cf7c754ceece984e6fa0d799677f50d93133db609772c7a2226e7746e6d046f0, hash3 = a159a9bfb938de686f6aced37a2f7fa62d6ff5e702586448884b70804882b32f, hash2 = 1f52d643e8e633026db73db55eb1848580de00a203ee46263418f02c6bdb8c7a, hash1 = 1097bf8f5b832b54c81c1708327a54a88ca09f7bdab4571f1a335cc26bbd7904, author = Florian Roth, description = Detects reflective loader (Cobalt Strike) used in Operation Wilted Tulip, reference = http://www.clearskysec.com/tulip, license = https://creativecommons.org/licenses/by-nc/4.0/
Source: 00000000.00000002.3933486788.0000000002B90000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: MALWARE_Win_CobaltStrike author = ditekSHen, description = CobaltStrike payload
Source: 00000000.00000002.3933968079.00000000030B0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_CobaltStrike_ee756db7 os = windows, severity = x86, description = Attempts to detect Cobalt Strike based on strings found in BEACON, creation_date = 2021-03-23, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.CobaltStrike, fingerprint = e589cc259644bc75d6c4db02a624c978e855201cf851c0d87f0d54685ce68f71, id = ee756db7-e177-41f0-af99-c44646d334f7, last_modified = 2021-08-23
Source: 00000000.00000002.3933968079.00000000030B0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_CobaltStrike_663fc95d os = windows, severity = x86, description = Identifies CobaltStrike via unidentified function code, creation_date = 2021-04-01, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.CobaltStrike, fingerprint = d0f781d7e485a7ecfbbfd068601e72430d57ef80fc92a993033deb1ddcee5c48, id = 663fc95d-2472-4d52-ad75-c5d86cfc885f, last_modified = 2021-12-17
Source: 00000000.00000002.3933968079.00000000030B0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_CobaltStrike_b54b94ac reference_sample = 36d32b1ed967f07a4bd19f5e671294d5359009c04835601f2cc40fb8b54f6a2a, os = windows, severity = x86, description = Rule for beacon sleep obfuscation routine, creation_date = 2021-10-21, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.CobaltStrike, fingerprint = 2344dd7820656f18cfb774a89d89f5ab65d46cc7761c1f16b7e768df66aa41c8, id = b54b94ac-6ef8-4ee9-a8a6-f7324c1974ca, last_modified = 2022-01-13
Source: 00000000.00000002.3933968079.00000000030B0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_CobaltStrike_f0b627fc reference_sample = b362951abd9d96d5ec15d281682fa1c8fe8f8e4e2f264ca86f6b061af607f79b, os = windows, severity = x86, description = Rule for beacon reflective loader, creation_date = 2021-10-21, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.CobaltStrike, fingerprint = fbc94bedd50b5b943553dd438a183a1e763c098a385ac3a4fc9ff24ee30f91e1, id = f0b627fc-97cd-42cb-9eae-1efb0672762d, last_modified = 2022-01-13
Source: 00000000.00000002.3933968079.00000000030B0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: CobaltStrike_Unmodifed_Beacon date = 2019-08-16, author = yara@s3c.za.net, description = Detects unmodified CobaltStrike beacon DLL
Source: 00000000.00000002.3933968079.00000000030B0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: WiltedTulip_ReflectiveLoader date = 2017-07-23, hash5 = eee430003e7d59a431d1a60d45e823d4afb0d69262cc5e0c79f345aa37333a89, hash4 = cf7c754ceece984e6fa0d799677f50d93133db609772c7a2226e7746e6d046f0, hash3 = a159a9bfb938de686f6aced37a2f7fa62d6ff5e702586448884b70804882b32f, hash2 = 1f52d643e8e633026db73db55eb1848580de00a203ee46263418f02c6bdb8c7a, hash1 = 1097bf8f5b832b54c81c1708327a54a88ca09f7bdab4571f1a335cc26bbd7904, author = Florian Roth, description = Detects reflective loader (Cobalt Strike) used in Operation Wilted Tulip, reference = http://www.clearskysec.com/tulip, license = https://creativecommons.org/licenses/by-nc/4.0/
Source: 00000000.00000002.3933968079.00000000030B0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Trojan_Raw_Generic_4 date_created = 2020-12-02, rev = FireEye, date_modified = 2020-12-02, md5 = f41074be5b423afb02a74bc74222e35d
Source: Process Memory Space: WCcNzb83Y3.exe PID: 5896, type: MEMORYSTR Matched rule: Windows_Trojan_CobaltStrike_ee756db7 os = windows, severity = x86, description = Attempts to detect Cobalt Strike based on strings found in BEACON, creation_date = 2021-03-23, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.CobaltStrike, fingerprint = e589cc259644bc75d6c4db02a624c978e855201cf851c0d87f0d54685ce68f71, id = ee756db7-e177-41f0-af99-c44646d334f7, last_modified = 2021-08-23
Source: Process Memory Space: WCcNzb83Y3.exe PID: 5896, type: MEMORYSTR Matched rule: CobaltStrike_Unmodifed_Beacon date = 2019-08-16, author = yara@s3c.za.net, description = Detects unmodified CobaltStrike beacon DLL
Source: Process Memory Space: WCcNzb83Y3.exe PID: 5896, type: MEMORYSTR Matched rule: WiltedTulip_ReflectiveLoader date = 2017-07-23, hash5 = eee430003e7d59a431d1a60d45e823d4afb0d69262cc5e0c79f345aa37333a89, hash4 = cf7c754ceece984e6fa0d799677f50d93133db609772c7a2226e7746e6d046f0, hash3 = a159a9bfb938de686f6aced37a2f7fa62d6ff5e702586448884b70804882b32f, hash2 = 1f52d643e8e633026db73db55eb1848580de00a203ee46263418f02c6bdb8c7a, hash1 = 1097bf8f5b832b54c81c1708327a54a88ca09f7bdab4571f1a335cc26bbd7904, author = Florian Roth, description = Detects reflective loader (Cobalt Strike) used in Operation Wilted Tulip, reference = http://www.clearskysec.com/tulip, license = https://creativecommons.org/licenses/by-nc/4.0/
Source: classification engine Classification label: mal100.troj.evad.winEXE@1/2@0/1
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02B9FE24 LookupPrivilegeValueA,AdjustTokenPrivileges,GetLastError, 0_2_02B9FE24
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BA6C98 OpenProcess,TerminateProcess,GetLastError,CloseHandle,GetCurrentProcess,CreateToolhelp32Snapshot,Process32First,CloseHandle,OpenProcess,ProcessIdToSessionId,CloseHandle,Process32Next,CloseHandle,GetCurrentThread,OpenThreadToken,GetCurrentProcess,OpenProcessToken,CloseHandle,htonl,htonl,OpenProcess,GetLastError,OpenProcessToken,GetLastError,ImpersonateLoggedOnUser,GetLastError,DuplicateTokenEx,GetLastError,ImpersonateLoggedOnUser,GetLastError,CloseHandle,CloseHandle, 0_2_02BA6C98
Source: WCcNzb83Y3.exe Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Key opened: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: WCcNzb83Y3.exe ReversingLabs: Detection: 55%
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: apphelp.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: wininet.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: iertutil.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: sspicli.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: windows.storage.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: wldp.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: profapi.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: kernel.appcore.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: ondemandconnroutehelper.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: winhttp.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: mswsock.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: iphlpapi.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: winnsi.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: urlmon.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: srvcli.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: netutils.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: schannel.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: mskeyprotect.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: ntasn1.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: msasn1.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: dpapi.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: cryptsp.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: rsaenh.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: cryptbase.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: gpapi.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: cryptnet.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: dhcpcsvc6.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: dhcpcsvc.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: webio.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: dnsapi.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: rasadhlp.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: fwpuclnt.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: cabinet.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: ncrypt.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Section loaded: ncryptsslp.dll Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{0358b920-0ac7-461f-98f4-58e32cd89148}\InProcServer32 Jump to behavior
Contains functionality to dynamically determine API calls
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BBC124 LoadLibraryExW,GetLastError,LoadLibraryW,GetProcAddress,GetProcAddress,GetProcAddress,FreeLibrary,FreeLibrary,LoadLibraryExW,GetLastError,LoadLibraryExW, 0_2_02BBC124
Uses code obfuscation techniques (call, push, ret)
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BC515C push 0000006Ah; retf 0_2_02BC5174
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_001B012C push eax; ret 0_2_001B0388
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_001B02D5 push eax; ret 0_2_001B0388
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_030B9B65 push cs; retf 0_2_030B9B66
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_030D6A42 push ebp; iretd 0_2_030D6A43
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_030D6A62 push ebp; iretd 0_2_030D6A63
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_030D6A8B push ebp; iretd 0_2_030D6A8C
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_030BB19F push ebp; iretd 0_2_030BB1A0
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_030B97A4 push edi; iretd 0_2_030B97A5
Extensive use of GetProcAddress (often used to hide API calls)
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BAC148 EncodePointer,GetModuleHandleW,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress,GetProcAddress, 0_2_02BAC148
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Registry key monitored for changes: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot Jump to behavior

Malware Analysis System Evasion
barindex
Contains functionality to detect sleep reduction / modifications
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BA3F88 0_2_02BA3F88
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02B9F5C8 0_2_02B9F5C8
Found large amount of non-executed APIs
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe API coverage: 3.9 %
May check if the current machine is a sandbox (GetTickCount - Sleep)
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02B9F5C8 0_2_02B9F5C8
May sleep (evasive loops) to hinder dynamic analysis
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe TID: 6124 Thread sleep time: -120000s >= -30000s Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe TID: 6124 Thread sleep time: -60000s >= -30000s Jump to behavior
Sample execution stops while process was sleeping (likely an evasion)
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Last function: Thread delayed
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BA0ED4 malloc,GetCurrentDirectoryA,FindFirstFileA,GetLastError,free,free,FileTimeToSystemTime,SystemTimeToTzSpecificLocalTime,FindNextFileA,FindClose, 0_2_02BA0ED4
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BA779C malloc,_snprintf,FindFirstFileA,free,malloc,_snprintf,free,FindNextFileA,FindClose, 0_2_02BA779C
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Thread delayed: delay time: 60000 Jump to behavior
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Thread delayed: delay time: 60000 Jump to behavior
Source: WCcNzb83Y3.exe, 00000000.00000003.2691186059.0000000000565000.00000004.00000020.00020000.00000000.sdmp, WCcNzb83Y3.exe, 00000000.00000002.3932845354.0000000000565000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: Hyper-V RAWS
Source: WCcNzb83Y3.exe, 00000000.00000003.2691186059.0000000000565000.00000004.00000020.00020000.00000000.sdmp, WCcNzb83Y3.exe, 00000000.00000002.3932845354.0000000000565000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: Hyper-V RAW
Source: WCcNzb83Y3.exe, 00000000.00000002.3932845354.00000000004FE000.00000004.00000020.00020000.00000000.sdmp, WCcNzb83Y3.exe, 00000000.00000003.2691186059.0000000000521000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: Hyper-V RAW@
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BB4014 IsDebuggerPresent, 0_2_02BB4014
Contains functionality to check if a debugger is running (OutputDebugString,GetLastError)
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BB4C34 EncodePointer,__crtIsPackagedApp,LoadLibraryExW,GetLastError,LoadLibraryW,GetProcAddress,EncodePointer,GetProcAddress,EncodePointer,GetProcAddress,EncodePointer,GetProcAddress,EncodePointer,GetProcAddress,EncodePointer,IsDebuggerPresent,OutputDebugStringW,DecodePointer,DecodePointer,DecodePointer,DecodePointer,DecodePointer,DecodePointer, 0_2_02BB4C34
Contains functionality to dynamically determine API calls
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BBC124 LoadLibraryExW,GetLastError,LoadLibraryW,GetProcAddress,GetProcAddress,GetProcAddress,FreeLibrary,FreeLibrary,LoadLibraryExW,GetLastError,LoadLibraryExW, 0_2_02BBC124
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BADA80 GetProcessHeap, 0_2_02BADA80
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BBE4C8 RtlCaptureContext,SetUnhandledExceptionFilter, 0_2_02BBE4C8
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BBE4C0 DeleteCriticalSection,SetUnhandledExceptionFilter, 0_2_02BBE4C0

HIPS / PFW / Operating System Protection Evasion
barindex
Yara detected Powershell download and execute
Source: Yara match File source: Process Memory Space: WCcNzb83Y3.exe PID: 5896, type: MEMORYSTR
Contains functionality to execute programs as a different user
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BAA7DC LogonUserA,GetLastError,ImpersonateLoggedOnUser,GetLastError, 0_2_02BAA7DC
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BAA754 AllocateAndInitializeSid,CheckTokenMembership,FreeSid, 0_2_02BAA754
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02B9FBD4 CreateNamedPipeA, 0_2_02B9FBD4
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BBE2B0 GetLocalTime, 0_2_02BBE2B0
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BA455C GetUserNameA,GetComputerNameA,GetModuleFileNameA,strrchr,GetVersionExA,GetProcAddress,GetModuleHandleA,GetProcAddress,_snprintf, 0_2_02BA455C
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BA455C GetUserNameA,GetComputerNameA,GetModuleFileNameA,strrchr,GetVersionExA,GetProcAddress,GetModuleHandleA,GetProcAddress,_snprintf, 0_2_02BA455C

Remote Access Functionality
barindex
Yara detected CobaltStrike
Source: Yara match File source: Process Memory Space: WCcNzb83Y3.exe PID: 5896, type: MEMORYSTR
Source: Yara match File source: 0.2.WCcNzb83Y3.exe.2b90000.1.unpack, type: UNPACKEDPE
Source: Yara match File source: 0.2.WCcNzb83Y3.exe.2b90000.1.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 00000000.00000002.3932728110.000000000014A000.00000004.00000010.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000002.3933717673.0000000002BF0000.00000020.00001000.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000002.3932770819.00000000001B0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000002.3933486788.0000000002B90000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000002.3933968079.00000000030B0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY
Contains functionality to open a port and listen for incoming connection (possibly a backdoor)
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BA50E0 socket,htons,ioctlsocket,closesocket,bind,listen, 0_2_02BA50E0
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BAAF84 socket,closesocket,htons,bind,listen, 0_2_02BAAF84
Source: C:\Users\user\Desktop\WCcNzb83Y3.exe Code function: 0_2_02BA4CD8 htonl,htons,socket,closesocket,bind,ioctlsocket, 0_2_02BA4CD8
windows-stand
Hide Legend

Legend:

  • Process
  • Signature
  • Created File
  • DNS/IP Info
  • Is Dropped
  • Is Windows Process
  • Number of created Registry Values
  • Number of created Files
  • Visual Basic
  • Delphi
  • Java
  • .Net C# or VB.NET
  • C, C++ or other language
  • Is malicious
  • Internet
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1428878 Sample: WCcNzb83Y3.exe Startdate: 19/04/2024 Architecture: WINDOWS Score: 100 11 Snort IDS alert for network traffic 2->11 13 Found malware configuration 2->13 15 Malicious sample detected (through community Yara rule) 2->15 17 4 other signatures 2->17 5 WCcNzb83Y3.exe 6 2->5         started        process3 dnsIp4 9 47.120.39.182, 49710, 49712, 49724 CNNIC-ALIBABA-CN-NET-APHangzhouAlibabaAdvertisingCoLtd China 5->9 19 Contains functionality to detect sleep reduction / modifications 5->19 signatures5
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs

Contacted Public IPs

IP Domain Country Flag ASN ASN Name Malicious
47.120.39.182
 unknown China
37963 CNNIC-ALIBABA-CN-NET-APHangzhouAlibabaAdvertisingCoLtd true

Contacted Domains

Name IP Active
bg.microsoft.map.fastly.net 199.232.210.172 true

Contacted URLs

Name Malicious Antivirus Detection Reputation
http://47.120.39.182:63306/Gs3p true
    		unknown