Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250129-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-01-2025 00:39

General

  • Target

    JaffaCakes118_50e93ac55ff74b46be448f4adf103c43.exe

  • Size

    692KB

  • MD5

    50e93ac55ff74b46be448f4adf103c43

  • SHA1

    b517f5f669048508ac90bbc662b6af9066fd3ff9

  • SHA256

    5b01cd848be1f1a8c9a3ed3aa59508be568abeaef19b287c200fe18723783ed1

  • SHA512

    38eed2dfe534551daae8322b1b9cff1dd141564d6dd1761b934871effd6a498af8e3781bade3105e135aaedc7696c0a3c8d9bc773862d9b9536b6a30cda746a3

  • SSDEEP

    12288:8XhpvNWw276S/DuoeFcfbmiJ99VPhYR5MTSHvLenELrWv1lZw4JuMkMh/fy452U3:qnAw2WWeFcfbP9VPSPMTSPL/rWvzq4Jn

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

gehackt.no-ip.org:1604

gehackt.no-ip.org:3389

Mutex

DC_MUTEX-F3NGXVX

Attributes
  • InstallPath

    MSDCSC\svchost.exe

  • gencode

    97X125MJWil4

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Signatures

  • Darkcomet

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

  • Darkcomet family
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • 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.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 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 8 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_50e93ac55ff74b46be448f4adf103c43.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_50e93ac55ff74b46be448f4adf103c43.exe"
    1⤵
    • Modifies WinLogon for persistence
    • 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:4624
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_50e93ac55ff74b46be448f4adf103c43.exe" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4424
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_50e93ac55ff74b46be448f4adf103c43.exe" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:2016
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2188
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:4192
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:64
    • C:\Users\Admin\AppData\Local\Temp\MSDCSC\svchost.exe
      "C:\Users\Admin\AppData\Local\Temp\MSDCSC\svchost.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1400
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:776

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\MSDCSC\svchost.exe

    Filesize

    692KB

    MD5

    50e93ac55ff74b46be448f4adf103c43

    SHA1

    b517f5f669048508ac90bbc662b6af9066fd3ff9

    SHA256

    5b01cd848be1f1a8c9a3ed3aa59508be568abeaef19b287c200fe18723783ed1

    SHA512

    38eed2dfe534551daae8322b1b9cff1dd141564d6dd1761b934871effd6a498af8e3781bade3105e135aaedc7696c0a3c8d9bc773862d9b9536b6a30cda746a3

  • memory/64-3-0x00000000010A0000-0x00000000010A1000-memory.dmp

    Filesize

    4KB

  • memory/776-64-0x0000000000820000-0x0000000000821000-memory.dmp

    Filesize

    4KB

  • memory/1400-68-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1400-70-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1400-65-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1400-66-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1400-67-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1400-78-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1400-69-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1400-77-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1400-71-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1400-72-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1400-73-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1400-74-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1400-75-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1400-76-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/4624-62-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/4624-0-0x00000000023B0000-0x00000000023B1000-memory.dmp

    Filesize

    4KB