Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/07/2024, 22:35

General

  • Target

    65115173fb1e7ac067de48d48409e2f5_JaffaCakes118.exe

  • Size

    821KB

  • MD5

    65115173fb1e7ac067de48d48409e2f5

  • SHA1

    2b954abb70cbc51d71d241372c6f459d82b22bfe

  • SHA256

    846789c651a77d10528f9bc3efc108381f1b99593cd38679b2343fcaf6b65dbc

  • SHA512

    10ad98c289bcb7988431780a439b59ddb464d8644e4fd864fee19b72a253098e66a8ef070f00d69c46578b86077f451a593919ed48fadae39ed3a433f196026f

  • SSDEEP

    24576:o3nbWmJVJFwSddIXvfhqbiaxvRxq9yvzR:uamdZdcBYpbR

Malware Config

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies firewall policy service 3 TTPs 6 IoCs
  • Modifies security service 2 TTPs 2 IoCs
  • Windows security bypass 2 TTPs 4 IoCs
  • Disables RegEdit via registry modification 2 IoCs
  • Disables Task Manager via registry modification
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • System policy modification 1 TTPs 3 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\65115173fb1e7ac067de48d48409e2f5_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\65115173fb1e7ac067de48d48409e2f5_JaffaCakes118.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:556
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1216
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:2124
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4888
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:1004
    • C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe
      "C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe"
      2⤵
      • Modifies firewall policy service
      • Modifies security service
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Windows security modification
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:1372
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        3⤵
        • Modifies firewall policy service
        • Modifies security service
        • Windows security bypass
        • Disables RegEdit via registry modification
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:3144

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe

    Filesize

    821KB

    MD5

    65115173fb1e7ac067de48d48409e2f5

    SHA1

    2b954abb70cbc51d71d241372c6f459d82b22bfe

    SHA256

    846789c651a77d10528f9bc3efc108381f1b99593cd38679b2343fcaf6b65dbc

    SHA512

    10ad98c289bcb7988431780a439b59ddb464d8644e4fd864fee19b72a253098e66a8ef070f00d69c46578b86077f451a593919ed48fadae39ed3a433f196026f

  • C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat

    Filesize

    50B

    MD5

    b774ae3fb1da087e1f83b4f7b2060e5a

    SHA1

    97eb9be49ac3af9c851c9e1e84e32bfd53e325a8

    SHA256

    adaf4a84b41e410b02e261cfd0fe7739d98647eab73c3badd32ac6e39f26351b

    SHA512

    f75d0f95f7306d26a12b414bfe37b97fbd37546cb3c6e403def7077329ddffb4b45d5c5f0ba0e7bb6d72851d2d691b0a85267beead42f7cbf2e8c3d45a3b4701

  • memory/556-0-0x0000000002830000-0x0000000002831000-memory.dmp

    Filesize

    4KB

  • memory/556-20-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/1372-22-0x00000000023E0000-0x00000000023E1000-memory.dmp

    Filesize

    4KB

  • memory/1372-24-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/3144-23-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB