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Analysis

  • max time kernel
    150s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/11/2024, 20:55

General

  • Target

    87b1557a6486ef0dad75b2d9f4b9ec86_JaffaCakes118.exe

  • Size

    253KB

  • MD5

    87b1557a6486ef0dad75b2d9f4b9ec86

  • SHA1

    1daf68ee5f08ef0c0f55b4b6a799440dc175281b

  • SHA256

    e35661892e57a9dcf8fd0d99eaa61422ca765a68a52ef60d12df488321800a2e

  • SHA512

    3bb7412f12dbf3e463d31d503ed74a6d9d3ee6bd229a826849c88f1c9d2551300f1330952d413f2cb0dfc3aeb7e7e5f16a33a8e8b8f9bf0ebef099e2d5398e1c

  • SSDEEP

    6144:XD7cY2fgssM7Wirg9KXylmRiL+QMeC/i6isqX7UovnONztByipwxZ:Xl8E4w5huat7UovONzbXw

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

sameg.no-ip.biz:1604

Mutex

DC_MUTEX-F54S21D

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    QrEhKkKT5N4s

  • 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
  • Windows security bypass 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
  • Windows security modification 2 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • UPX packed file 13 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 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 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\87b1557a6486ef0dad75b2d9f4b9ec86_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\87b1557a6486ef0dad75b2d9f4b9ec86_JaffaCakes118.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:3896
    • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
      2⤵
      • Windows security bypass
      • Executes dropped EXE
      • Windows security modification
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:3132

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    253KB

    MD5

    87b1557a6486ef0dad75b2d9f4b9ec86

    SHA1

    1daf68ee5f08ef0c0f55b4b6a799440dc175281b

    SHA256

    e35661892e57a9dcf8fd0d99eaa61422ca765a68a52ef60d12df488321800a2e

    SHA512

    3bb7412f12dbf3e463d31d503ed74a6d9d3ee6bd229a826849c88f1c9d2551300f1330952d413f2cb0dfc3aeb7e7e5f16a33a8e8b8f9bf0ebef099e2d5398e1c

  • memory/3132-67-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3132-69-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3132-63-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3132-81-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3132-66-0x0000000002700000-0x0000000002701000-memory.dmp

    Filesize

    4KB

  • memory/3132-77-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3132-68-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3132-76-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3132-70-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3132-72-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3132-74-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3896-1-0x0000000002340000-0x0000000002341000-memory.dmp

    Filesize

    4KB

  • memory/3896-0-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3896-65-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB