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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/01/2025, 21:56

General

  • Target

    JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe

  • Size

    804KB

  • MD5

    6872b36cf853a8bb8059ddfa12d93570

  • SHA1

    9b22f8a53792b5677fdc9ded784c465732211f27

  • SHA256

    44d190ef0a39280a4d697f539081774eed3c1fe85ec5625437a73649338b7fe4

  • SHA512

    a4807320d883fa781a065b1dba27cca24c7b7782677d0a09fa1c894e46f8e2b6ebe67ab0a2f79690fc74ea2d5e920ba93aa4380ae37f8d1298ee9b12a831424c

  • SSDEEP

    12288:r6A84PaHhfD/tV9sj5NKR0pau9XGyu2qBVGLQyTPfhils:OAmBpVKHu0Mu9Xo20VGLVP5

Malware Config

Signatures

  • Darkcomet

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

  • Darkcomet family
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Drops file in Drivers directory 1 IoCs
  • 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 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Modifies registry class 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • System policy modification 1 TTPs 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops file in Drivers directory
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4108
    • C:\Windupdt\winupdate.exe
      "C:\Windupdt\winupdate.exe"
      2⤵
      • Modifies security service
      • Windows security bypass
      • Executes dropped EXE
      • Windows security modification
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • System policy modification
      PID:1948
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 5 > NUL&del "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:4484
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 5
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:552

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windupdt\winupdate.exe

    Filesize

    804KB

    MD5

    6872b36cf853a8bb8059ddfa12d93570

    SHA1

    9b22f8a53792b5677fdc9ded784c465732211f27

    SHA256

    44d190ef0a39280a4d697f539081774eed3c1fe85ec5625437a73649338b7fe4

    SHA512

    a4807320d883fa781a065b1dba27cca24c7b7782677d0a09fa1c894e46f8e2b6ebe67ab0a2f79690fc74ea2d5e920ba93aa4380ae37f8d1298ee9b12a831424c

  • memory/1948-38-0x00000000006F0000-0x00000000006F1000-memory.dmp

    Filesize

    4KB

  • memory/1948-39-0x0000000000400000-0x00000000004C9000-memory.dmp

    Filesize

    804KB

  • memory/4108-0-0x0000000000400000-0x00000000004C9000-memory.dmp

    Filesize

    804KB

  • memory/4108-1-0x00000000007A0000-0x00000000007A1000-memory.dmp

    Filesize

    4KB

  • memory/4108-37-0x0000000000400000-0x00000000004C9000-memory.dmp

    Filesize

    804KB