Analysis

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

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-01-2025 14:58

General

  • Target

    JaffaCakes118_6d762a94e66deec625a3620e4850fca0.exe

  • Size

    756KB

  • MD5

    6d762a94e66deec625a3620e4850fca0

  • SHA1

    0819e2d83f56030c9d26a913741bc3b41a9880c4

  • SHA256

    f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8

  • SHA512

    1ad2b9b1592c25f6c86eff7a317fd8dedcd775c71e3070d83becd6dee6e0185b502cef95a6c3193d20a415d06b3d86f0f1290c230a1cb58fff6e305fb7366fb0

  • SSDEEP

    12288:n9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hSqMd0QZhg:BZ1xuVVjfFoynPaVBUR8f+kN10EBgD07

Malware Config

Extracted

Family

darkcomet

Botnet

PerceusTake

C2

yalabeni00.no-ip.biz:1604

shen00.no-ip.biz:1604

bymicroshen.no-ip.biz:1604

Mutex

DC_MUTEX-13RUG7N

Attributes
  • InstallPath

    MSDCSC\System.exe

  • gencode

    aeErt76Z1CMf

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    System

Signatures

  • Darkcomet

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

  • Darkcomet family
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies firewall policy service 3 TTPs 3 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • 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 2 IoCs
  • Adds Run key to start application 2 TTPs 1 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.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs
  • System policy modification 1 TTPs 3 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d762a94e66deec625a3620e4850fca0.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d762a94e66deec625a3620e4850fca0.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:5084
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d762a94e66deec625a3620e4850fca0.exe" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1076
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d762a94e66deec625a3620e4850fca0.exe" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:64
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5008
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:684
    • C:\Users\Admin\Documents\MSDCSC\System.exe
      "C:\Users\Admin\Documents\MSDCSC\System.exe"
      2⤵
      • Modifies firewall policy service
      • Modifies security service
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Windows security modification
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:2412
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3240

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    756KB

    MD5

    6d762a94e66deec625a3620e4850fca0

    SHA1

    0819e2d83f56030c9d26a913741bc3b41a9880c4

    SHA256

    f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8

    SHA512

    1ad2b9b1592c25f6c86eff7a317fd8dedcd775c71e3070d83becd6dee6e0185b502cef95a6c3193d20a415d06b3d86f0f1290c230a1cb58fff6e305fb7366fb0

  • memory/2412-72-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/2412-69-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/2412-73-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/2412-68-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/2412-74-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/2412-70-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/2412-71-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/2412-75-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/2412-81-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/2412-80-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/2412-79-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/2412-76-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/2412-77-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/2412-78-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/3240-66-0x0000000001060000-0x0000000001061000-memory.dmp

    Filesize

    4KB

  • memory/5084-0-0x00000000006E0000-0x00000000006E1000-memory.dmp

    Filesize

    4KB

  • memory/5084-67-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB