Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-08-2024 20:14

General

  • Target

    8783017c005439b3d0f2b3f18a9bcf5d_JaffaCakes118.exe

  • Size

    650KB

  • MD5

    8783017c005439b3d0f2b3f18a9bcf5d

  • SHA1

    828d4785737e2c2b044a53b951a605928e2d200d

  • SHA256

    c29308769e6ac527151045a127d4a19a4eca8c978979f8e0b1b8b813b1928677

  • SHA512

    de2de12db3122ac52b333b3e05d385f696b1747dab2e90bed396337dcfbc7f9728444b72436f507ec66ccd7f804c7ee2c81dca160cadd5390738815f267ef379

  • SSDEEP

    12288:7k0QVlhmPojAPTMEsUTg0oChO/Q2JbsbjPbN5qhRTtYe3f+Iw86k/9/+J:w0QRWoJEfg0oChGdJQbjPbNW5tYeP+G8

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

mnanauk-dz.no-ip.biz:1604

Mutex

DC_MUTEX-EB46CLG

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    rpfQbN9b66NT

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicroUpdate

Signatures

  • Darkcomet

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

  • 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 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8783017c005439b3d0f2b3f18a9bcf5d_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\8783017c005439b3d0f2b3f18a9bcf5d_JaffaCakes118.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5060
    • C:\Windows\MSDCSC\msdcsc.exe
      "C:\Windows\MSDCSC\msdcsc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:396
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2796

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\MSDCSC\msdcsc.exe

    Filesize

    650KB

    MD5

    8783017c005439b3d0f2b3f18a9bcf5d

    SHA1

    828d4785737e2c2b044a53b951a605928e2d200d

    SHA256

    c29308769e6ac527151045a127d4a19a4eca8c978979f8e0b1b8b813b1928677

    SHA512

    de2de12db3122ac52b333b3e05d385f696b1747dab2e90bed396337dcfbc7f9728444b72436f507ec66ccd7f804c7ee2c81dca160cadd5390738815f267ef379

  • memory/396-14-0x00000000023B0000-0x00000000023B1000-memory.dmp

    Filesize

    4KB

  • memory/396-16-0x0000000000400000-0x00000000004B0000-memory.dmp

    Filesize

    704KB

  • memory/2796-15-0x0000000000400000-0x00000000004B0000-memory.dmp

    Filesize

    704KB

  • memory/5060-0-0x00000000006C0000-0x00000000006C1000-memory.dmp

    Filesize

    4KB

  • memory/5060-12-0x0000000000400000-0x00000000004B0000-memory.dmp

    Filesize

    704KB