Analysis

  • max time kernel
    148s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250410-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250410-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/04/2025, 03:30

General

  • Target

    JaffaCakes118_c111819eab30850f1a2b0013c13ed599.exe

  • Size

    22.1MB

  • MD5

    c111819eab30850f1a2b0013c13ed599

  • SHA1

    ddf9d444ee4914194798a2a6fe6b39795f54eabc

  • SHA256

    6e4c943d59d7c9ae951de1e14f35a47af766be7cb2680b6915ae9713b5eb2887

  • SHA512

    cd5a0902cab21d90aa14e9c344b68cade4710922f8ddd30a8c204bbc941418c8e9ea45a0341dfd0504226b52206e167ae9580d18894517748285c5882a73c37b

  • SSDEEP

    24576:BWc7SR2xuGBRBgOiULNFOAL+ToFZxvYR:BWVR2MrOiUh8LME

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

cr4nk1337.no-ip.org:1337

Mutex

DC_MUTEX-7XE7939

Attributes
  • InstallPath

    Windupdt\winupdate.exe

  • gencode

    9s�5H0iQeqv.

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    winupdater

rc4.plain

Signatures

  • Darkcomet

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

  • Darkcomet family
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 4 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

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

  • Checks processor information in registry 2 TTPs 8 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 50 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c111819eab30850f1a2b0013c13ed599.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c111819eab30850f1a2b0013c13ed599.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:6120
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c111819eab30850f1a2b0013c13ed599.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c111819eab30850f1a2b0013c13ed599.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Checks BIOS information in registry
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:912
      • C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe
        "C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:5360
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c111819eab30850f1a2b0013c13ed599.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c111819eab30850f1a2b0013c13ed599.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:5064
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:460
    • C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe
      C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5004
      • C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe
        "C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe"
        3⤵
        • Checks BIOS information in registry
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:4704
      • C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe
        "C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4964

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe

    Filesize

    22.1MB

    MD5

    c111819eab30850f1a2b0013c13ed599

    SHA1

    ddf9d444ee4914194798a2a6fe6b39795f54eabc

    SHA256

    6e4c943d59d7c9ae951de1e14f35a47af766be7cb2680b6915ae9713b5eb2887

    SHA512

    cd5a0902cab21d90aa14e9c344b68cade4710922f8ddd30a8c204bbc941418c8e9ea45a0341dfd0504226b52206e167ae9580d18894517748285c5882a73c37b

  • memory/912-3-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/912-4-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/912-2-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/912-28-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/912-11-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/912-8-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/912-12-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/4704-44-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/4704-56-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/4704-35-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/4704-40-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/4704-65-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/4704-45-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/4704-42-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/4704-43-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/4704-62-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/4704-60-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/4704-50-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/4704-58-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/4704-54-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/4964-46-0x0000000000400000-0x000000000040A000-memory.dmp

    Filesize

    40KB

  • memory/5064-7-0x0000000000400000-0x000000000040A000-memory.dmp

    Filesize

    40KB

  • memory/5064-51-0x0000000000400000-0x000000000040A000-memory.dmp

    Filesize

    40KB

  • memory/5064-48-0x0000000000400000-0x000000000040A000-memory.dmp

    Filesize

    40KB

  • memory/5064-5-0x0000000000400000-0x000000000040A000-memory.dmp

    Filesize

    40KB