Analysis

  • max time kernel
    148s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/02/2025, 03:41

General

  • Target

    JaffaCakes118_315aca4b6d1a204e78df914bf7e588ba.exe

  • Size

    668KB

  • MD5

    315aca4b6d1a204e78df914bf7e588ba

  • SHA1

    5211436ba2464ab3482aef7bc921f26246b1182c

  • SHA256

    de2f0931ac8324a64e41caf6ba7cc63e46cb30853725194668aed67bd4eaff23

  • SHA512

    769c263bed2c7df8ebbdcf8d312290c645859454437ab6a9aa24a07836dc1ac6dc45d74238664f479bb115b28d327113cbe8fa705d5c28b6be452c9f984fa92b

  • SSDEEP

    12288:31dHwD+vgEphGYMg1lYPkoBJKrK3o4OYaHPP88oCqpvw9I:3cDgbMg1lYPSrK44OTHgOI

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:1604

Mutex

DC_MUTEX-8GJ9SUE

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    9pxt74fEhlHv

  • install

    true

  • offline_keylogger

    false

  • persistence

    true

  • reg_key

    MicroUpdate

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 computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 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.

  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_315aca4b6d1a204e78df914bf7e588ba.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_315aca4b6d1a204e78df914bf7e588ba.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1744
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_315aca4b6d1a204e78df914bf7e588ba.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_315aca4b6d1a204e78df914bf7e588ba.exe"
      2⤵
      • 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:3920
      • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1928
        • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
          "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:436

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-925314154-1797147466-1467878628-1000\88603cb2913a7df3fbd16b5f958e6447_87aefc90-3d2c-45c7-bd08-29a9b6ee7114

    Filesize

    51B

    MD5

    5fc2ac2a310f49c14d195230b91a8885

    SHA1

    90855cc11136ba31758fe33b5cf9571f9a104879

    SHA256

    374e0e2897a7a82e0e44794cad89df0f3cdd7703886239c1fe06d625efd48092

    SHA512

    ab46554df9174b9fe9beba50a640f67534c3812f64d96a1fb8adfdc136dfe730ca2370825cd45b7f87a544d6a58dd868cb5a3a7f42e2789f6d679dbc0fdd52c3

  • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

    Filesize

    668KB

    MD5

    315aca4b6d1a204e78df914bf7e588ba

    SHA1

    5211436ba2464ab3482aef7bc921f26246b1182c

    SHA256

    de2f0931ac8324a64e41caf6ba7cc63e46cb30853725194668aed67bd4eaff23

    SHA512

    769c263bed2c7df8ebbdcf8d312290c645859454437ab6a9aa24a07836dc1ac6dc45d74238664f479bb115b28d327113cbe8fa705d5c28b6be452c9f984fa92b

  • memory/436-90-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/436-79-0x00000000020B0000-0x00000000020B1000-memory.dmp

    Filesize

    4KB

  • memory/436-88-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/436-97-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/436-96-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/436-94-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/436-92-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/436-89-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/436-81-0x0000000000400000-0x0000000000500000-memory.dmp

    Filesize

    1024KB

  • memory/436-84-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/436-91-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/436-86-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/436-80-0x0000000000400000-0x0000000000500000-memory.dmp

    Filesize

    1024KB

  • memory/1744-0-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/1744-8-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/1928-78-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/3920-83-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3920-7-0x0000000000400000-0x0000000000500000-memory.dmp

    Filesize

    1024KB

  • memory/3920-82-0x0000000000400000-0x0000000000500000-memory.dmp

    Filesize

    1024KB

  • memory/3920-6-0x0000000000400000-0x0000000000500000-memory.dmp

    Filesize

    1024KB

  • memory/3920-5-0x0000000000400000-0x0000000000500000-memory.dmp

    Filesize

    1024KB

  • memory/3920-9-0x00000000022C0000-0x00000000022C1000-memory.dmp

    Filesize

    4KB