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Windows Analysis Report
qs5yhVj1bE.exe

Overview

General Information

Sample Name:qs5yhVj1bE.exe
Analysis ID:623785
MD5:fc38c021fb2a8c4d49b9f3e3fd91b03b
SHA1:f790e60e1a48a0faf5c311ee8c882f6d08653490
SHA256:af66baeaeaf66b03d22bfba26cfaff343489fdf3eccb9e6078017c93fd6155c5
Tags:exeNanoCoreRAT
Infos:

Detection

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

Signatures

Found malware configuration
Multi AV Scanner detection for submitted file
Malicious sample detected (through community Yara rule)
Sigma detected: NanoCore
Yara detected AntiVM3
Detected Nanocore Rat
Antivirus detection for URL or domain
Multi AV Scanner detection for dropped file
Yara detected Nanocore RAT
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
.NET source code contains potential unpacker
Injects a PE file into a foreign processes
C2 URLs / IPs found in malware configuration
Adds a directory exclusion to Windows Defender
Hides that the sample has been downloaded from the Internet (zone.identifier)
Uses schtasks.exe or at.exe to add and modify task schedules
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
Yara signature match
Antivirus or Machine Learning detection for unpacked file
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
Internet Provider seen in connection with other malware
Detected potential crypto function
Sample execution stops while process was sleeping (likely an evasion)
Contains long sleeps (>= 3 min)
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Installs a raw input device (often for capturing keystrokes)
Sample file is different than original file name gathered from version info
PE file contains strange resources
Drops PE files
Detected TCP or UDP traffic on non-standard ports
Creates a process in suspended mode (likely to inject code)

Classification

  • System is w10x64
  • qs5yhVj1bE.exe (PID: 6204 cmdline: "C:\Users\user\Desktop\qs5yhVj1bE.exe" MD5: FC38C021FB2A8C4D49B9F3E3FD91B03B)
    • powershell.exe (PID: 6664 cmdline: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\user\AppData\Roaming\KwPaVQtTrKa.exe MD5: DBA3E6449E97D4E3DF64527EF7012A10)
      • conhost.exe (PID: 6004 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • schtasks.exe (PID: 5580 cmdline: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KwPaVQtTrKa" /XML "C:\Users\user\AppData\Local\Temp\tmp8FC.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
      • conhost.exe (PID: 3980 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • qs5yhVj1bE.exe (PID: 4128 cmdline: C:\Users\user\Desktop\qs5yhVj1bE.exe MD5: FC38C021FB2A8C4D49B9F3E3FD91B03B)
    • qs5yhVj1bE.exe (PID: 6464 cmdline: C:\Users\user\Desktop\qs5yhVj1bE.exe MD5: FC38C021FB2A8C4D49B9F3E3FD91B03B)
  • cleanup
{"Version": "1.2.2.0", "Mutex": "6d38b3f5-33a1-41b7-a7f2-d8fe2b39", "Group": "happy man", "Domain1": "91.193.75.221", "Domain2": "", "Port": 4040, "RunOnStartup": "Disable", "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"}
SourceRuleDescriptionAuthorStrings
00000000.00000002.448596274.0000000003291000.00000004.00000800.00020000.00000000.sdmpJoeSecurity_AntiVM_3Yara detected AntiVM_3Joe Security
    0000000D.00000000.444387239.0000000000402000.00000040.00000400.00020000.00000000.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
    • 0xff8d:$x1: NanoCore.ClientPluginHost
    • 0xffca:$x2: IClientNetworkHost
    • 0x13afd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
    0000000D.00000000.444387239.0000000000402000.00000040.00000400.00020000.00000000.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
      0000000D.00000000.444387239.0000000000402000.00000040.00000400.00020000.00000000.sdmpNanoCoreunknown Kevin Breen <kevin@techanarchy.net>
      • 0xfcf5:$a: NanoCore
      • 0xfd05:$a: NanoCore
      • 0xff39:$a: NanoCore
      • 0xff4d:$a: NanoCore
      • 0xff8d:$a: NanoCore
      • 0xfd54:$b: ClientPlugin
      • 0xff56:$b: ClientPlugin
      • 0xff96:$b: ClientPlugin
      • 0xfe7b:$c: ProjectData
      • 0x10882:$d: DESCrypto
      • 0x1824e:$e: KeepAlive
      • 0x1623c:$g: LogClientMessage
      • 0x12437:$i: get_Connected
      • 0x10bb8:$j: #=q
      • 0x10be8:$j: #=q
      • 0x10c04:$j: #=q
      • 0x10c34:$j: #=q
      • 0x10c50:$j: #=q
      • 0x10c6c:$j: #=q
      • 0x10c9c:$j: #=q
      • 0x10cb8:$j: #=q
      00000000.00000002.449384414.0000000003534000.00000004.00000800.00020000.00000000.sdmpJoeSecurity_AntiVM_3Yara detected AntiVM_3Joe Security
        Click to see the 31 entries
        SourceRuleDescriptionAuthorStrings
        13.2.qs5yhVj1bE.exe.4064545.4.raw.unpackNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
        • 0xb184:$x1: NanoCore.ClientPluginHost
        • 0x23c28:$x1: NanoCore.ClientPluginHost
        • 0xb1b1:$x2: IClientNetworkHost
        • 0x23c55:$x2: IClientNetworkHost
        13.2.qs5yhVj1bE.exe.4064545.4.raw.unpackNanocore_RAT_Feb18_1Detects Nanocore RATFlorian Roth
        • 0xb184:$x2: NanoCore.ClientPluginHost
        • 0x23c28:$x2: NanoCore.ClientPluginHost
        • 0xc25f:$s4: PipeCreated
        • 0x24d03:$s4: PipeCreated
        • 0xb19e:$s5: IClientLoggingHost
        • 0x23c42:$s5: IClientLoggingHost
        13.2.qs5yhVj1bE.exe.4064545.4.raw.unpackJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
          13.2.qs5yhVj1bE.exe.4064545.4.raw.unpackMALWARE_Win_NanoCoreDetects NanoCoreditekSHen
          • 0xb14f:$x2: NanoCore.ClientPlugin
          • 0x23bf3:$x2: NanoCore.ClientPlugin
          • 0xb184:$x3: NanoCore.ClientPluginHost
          • 0x23c28:$x3: NanoCore.ClientPluginHost
          • 0xb143:$i2: IClientData
          • 0x23be7:$i2: IClientData
          • 0xb165:$i3: IClientNetwork
          • 0x23c09:$i3: IClientNetwork
          • 0xb174:$i5: IClientDataHost
          • 0x23c18:$i5: IClientDataHost
          • 0xb19e:$i6: IClientLoggingHost
          • 0x23c42:$i6: IClientLoggingHost
          • 0xb1b1:$i7: IClientNetworkHost
          • 0x23c55:$i7: IClientNetworkHost
          • 0xb1c4:$i8: IClientUIHost
          • 0x23c68:$i8: IClientUIHost
          • 0xb1d2:$i9: IClientNameObjectCollection
          • 0x23c76:$i9: IClientNameObjectCollection
          • 0xb1ee:$i10: IClientReadOnlyNameObjectCollection
          • 0x23c92:$i10: IClientReadOnlyNameObjectCollection
          • 0xaf41:$s1: ClientPlugin
          13.2.qs5yhVj1bE.exe.6280000.9.unpackNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
          • 0xd9ad:$x1: NanoCore.ClientPluginHost
          • 0xd9da:$x2: IClientNetworkHost