Analysis

  • max time kernel
    150s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/02/2025, 00:56

General

  • Target

    JaffaCakes118_1d65aa7463edc2167b396bde72f44a11.exe

  • Size

    842KB

  • MD5

    1d65aa7463edc2167b396bde72f44a11

  • SHA1

    446ffaf4daee028938050c130b00385d5070d7d2

  • SHA256

    4cd1a61c78ab7947e717bba9f8cddfc404294f1d4cfec5cdbf2526a30ebaed9e

  • SHA512

    7af906361047541cc75fe44958e2cde5916dac66c62fec13f1fd2fbf1ed6e38280cc96572453e9830d3055a3144439af9c2909b1c9ed2991d4eb0799b327d420

  • SSDEEP

    12288:WrELIki3xtxnzu9YfsfR3nzPlXF3rZ9cPxERpCMb3yJ6Kc1ZfXTVNtRk9z4UeGj:rIV31uekjF9cYpCMb3y+NjVNtE/

Malware Config

Extracted

Family

darkcomet

Botnet

Hacked

C2

md5ppn.no-ip.org:5656

md5ppn.no-ip.biz:5656

md5ppn.no-ip.biz:20012

md5ppn.no-ip.org:20012

md5ppn.no-ip.org:81

md5ppn.no-ip.biz:81

Mutex

DC_MUTEX-48S18PP

Attributes
  • InstallPath

    explorer.exe

  • gencode

    YtE6cF00wTdB

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    explorer

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
  • Modifies security service 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 1 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Windows security modification 2 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in System32 directory 4 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 behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1d65aa7463edc2167b396bde72f44a11.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1d65aa7463edc2167b396bde72f44a11.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2324
    • C:\Users\Admin\AppData\Local\Temp\fichier.exe
      "C:\Users\Admin\AppData\Local\Temp\fichier.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:700
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4080
      • C:\Windows\SysWOW64\YtE6cF00wTdB\explorer.exe
        "C:\Windows\system32\YtE6cF00wTdB\explorer.exe"
        3⤵
        • Modifies security service
        • Windows security bypass
        • Disables RegEdit via registry modification
        • Executes dropped EXE
        • Windows security modification
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2896
        • C:\Windows\SysWOW64\notepad.exe
          notepad
          4⤵
          • System Location Discovery: System Language Discovery
          PID:4828

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    690KB

    MD5

    d61f63d2b0027917fc3922dcbfd5b807

    SHA1

    d96e0940ac0b8fd30b7ebe8b5a2596c95123cb16

    SHA256

    ce4ee369617519d5847da12ace832c48d6b73b0253b0888fbd9e69062272dc03

    SHA512

    b6951fa94f144fb6ed8882bd984d6c3610dee7be7ee401cbfd8bd0352cfe0f491b1965cf17c39dc45c383e150ef9cc0e6f13f0d68cf4c82044840d7d6dc6e7fa

  • memory/700-17-0x0000000002400000-0x0000000002401000-memory.dmp

    Filesize

    4KB

  • memory/700-81-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2324-0-0x00007FF944883000-0x00007FF944885000-memory.dmp

    Filesize

    8KB

  • memory/2324-1-0x0000000000C50000-0x0000000000C7C000-memory.dmp

    Filesize

    176KB

  • memory/2324-2-0x0000000002DC0000-0x0000000002DC6000-memory.dmp

    Filesize

    24KB

  • memory/2324-3-0x00007FF944880000-0x00007FF945341000-memory.dmp

    Filesize

    10.8MB

  • memory/2324-16-0x00007FF944880000-0x00007FF945341000-memory.dmp

    Filesize

    10.8MB

  • memory/2896-83-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2896-85-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4080-21-0x0000000000A90000-0x0000000000A91000-memory.dmp

    Filesize

    4KB

  • memory/4828-80-0x0000000000770000-0x0000000000771000-memory.dmp

    Filesize

    4KB