Analysis

  • max time kernel
    92s
  • max time network
    93s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-06-2024 10:49

General

  • Target

    15b7e0abf99ca0d676029e8b22498209_JaffaCakes118.exe

  • Size

    1.2MB

  • MD5

    15b7e0abf99ca0d676029e8b22498209

  • SHA1

    81ddddb411c2e52c38756d2844b9697655884bb4

  • SHA256

    1b42202ece42ad388bfc7130f23945748a26ef286e8478e3f800d7f552fe340f

  • SHA512

    025330e1576eb9010f77df11404f984bebcfa7dbef3ec543bc6cfdcbb4c623495b4963c4c7e088dda418eb8b6c734e4b297f69d5668b38598310498b5ad346c4

  • SSDEEP

    24576:K9b43KRo7xvu2Ui+mBvqvtEWvRk8Ml6uOdbI:e4ay7xui/wRk9suQE

Malware Config

Extracted

Family

darkcomet

Botnet

Victim

C2

hackingrats.no-ip.biz:1604

Mutex

DCMIN_MUTEX-KXAVH1D

Attributes
  • InstallPath

    System32.exe

  • gencode

    DERuPJ12yzN9

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    DarkComet RAT

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 2 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\15b7e0abf99ca0d676029e8b22498209_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\15b7e0abf99ca0d676029e8b22498209_JaffaCakes118.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2736
    • C:\Users\Admin\AppData\Local\Temp\vbc.exe
      C:\Users\Admin\AppData\Local\Temp\vbc.exe
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in System32 directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3984
      • C:\Windows\SysWOW64\System32.exe
        "C:\Windows\system32\System32.exe"
        3⤵
        • Executes dropped EXE
        PID:1508

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\vbc.exe

    Filesize

    1.1MB

    MD5

    d881de17aa8f2e2c08cbb7b265f928f9

    SHA1

    08936aebc87decf0af6e8eada191062b5e65ac2a

    SHA256

    b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

    SHA512

    5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

  • memory/2736-0-0x0000000074A22000-0x0000000074A23000-memory.dmp

    Filesize

    4KB

  • memory/2736-1-0x0000000074A20000-0x0000000074FD1000-memory.dmp

    Filesize

    5.7MB

  • memory/2736-2-0x0000000074A20000-0x0000000074FD1000-memory.dmp

    Filesize

    5.7MB

  • memory/2736-25-0x0000000074A20000-0x0000000074FD1000-memory.dmp

    Filesize

    5.7MB

  • memory/3984-7-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3984-10-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3984-12-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3984-14-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3984-26-0x00000000023B0000-0x00000000023B1000-memory.dmp

    Filesize

    4KB

  • memory/3984-28-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB