Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-06-2024 19:11

General

  • Target

    131af0e4c40f5e7dfca711a45816fa37_JaffaCakes118.exe

  • Size

    929KB

  • MD5

    131af0e4c40f5e7dfca711a45816fa37

  • SHA1

    5c72ad82cd2da3807290c2d384546740097dd8c9

  • SHA256

    f4d30cb13736e18e207fe01046a535f4152c3c9d0581214fd9caf8dc7f19e0ea

  • SHA512

    dcb2d216965ec03d4cd691327f65a7f1ceede9253c0a16ab8c5d3aca66a6809c65637b264329ae76bae55927d5e6ced5a6f10297110cf5ac9e9af1e29d1bec19

  • SSDEEP

    24576:iY7WkuuKVuKBWXmKyT6duKvvbyyUHb8V0Zpu9Aooo0:57WvuKV9BWbymveHAsC

Malware Config

Signatures

  • Darkcomet

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

  • Windows security bypass 2 TTPs 1 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Sets file to hidden 1 TTPs 1 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 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 25 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\131af0e4c40f5e7dfca711a45816fa37_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\131af0e4c40f5e7dfca711a45816fa37_JaffaCakes118.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2996
    • C:\Users\Admin\AppData\Local\Temp\winlogon.exe
      C:\Users\Admin\AppData\Local\Temp\winlogon.exe
      2⤵
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Checks computer location settings
      • Executes dropped EXE
      • Windows security modification
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:460
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1696
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\winlogon.exe" +s +h
          4⤵
          • Sets file to hidden
          • Views/modifies file attributes
          PID:1140

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    63B

    MD5

    3821868491a01953e5f2f922ae9ff8b0

    SHA1

    2daf28fa5ce2c3b55c25c8fc4a1d5a03f9b85bce

    SHA256

    d9c3e5032a4eaea21cebe6aeeca341459f8d256c7b39f4bcd34e27e12deaabb8

    SHA512

    25c93ce1fc01a369306c769b861def036085aef807e0d0952830098d197b37e0d93a7d98c0df49aeff05b8493050df07d56307d643ff8421d7b31aa000e807e9

  • C:\Users\Admin\AppData\Local\Temp\winlogon.exe

    Filesize

    34KB

    MD5

    e118330b4629b12368d91b9df6488be0

    SHA1

    ce90218c7e3b90df2a3409ec253048bb6472c2fd

    SHA256

    3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9

    SHA512

    ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0

  • memory/460-31-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/460-20-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/460-21-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/460-12-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/460-14-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/460-25-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/460-16-0x00000000007D0000-0x00000000007D1000-memory.dmp

    Filesize

    4KB

  • memory/460-7-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/460-23-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/460-37-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/460-22-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/460-35-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/460-10-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/460-38-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/460-33-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/460-27-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/460-28-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/460-29-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/460-30-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/460-36-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/460-32-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/460-26-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/460-34-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/2996-3-0x0000000074B40000-0x00000000750F1000-memory.dmp

    Filesize

    5.7MB

  • memory/2996-0-0x0000000074B42000-0x0000000074B43000-memory.dmp

    Filesize

    4KB

  • memory/2996-1-0x0000000074B40000-0x00000000750F1000-memory.dmp

    Filesize

    5.7MB

  • memory/2996-15-0x0000000074B40000-0x00000000750F1000-memory.dmp

    Filesize

    5.7MB