Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250207-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250207-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/02/2025, 10:28

General

  • Target

    JaffaCakes118_f6c9055d523b94dd0dd20cb2d59ce039.exe

  • Size

    423KB

  • MD5

    f6c9055d523b94dd0dd20cb2d59ce039

  • SHA1

    b25235cf8781ef947a70cebbe5ab5d3cfc18b442

  • SHA256

    6b4200469bff3fb5fd0c7880de7f67d2fa83260a4159bf3d2305e73f005cdf05

  • SHA512

    bcc8ae473369b75ec54d83fab15c4eb1a582ac7b64db62e45976c4b979d8c9623113bcf6bf520496f9c9f33d9b4b2a2cdd27dee7c74a844f04883176021d03bf

  • SSDEEP

    12288:2lghoSqDNJ/Jj0PeLTCdKET05/hM4/KZood31gLeiW:8g2DNb0wCdKVhny/d31IeiW

Malware Config

Extracted

Family

darkcomet

Botnet

Victim

C2

dcrat214.no-ip.biz:1604

Mutex

DC_MUTEX-E5E9EN3

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    ndFoCwbBFulg

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

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
  • Downloads MZ/PE file 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Windows security modification 2 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • UPX packed file 23 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 6 IoCs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f6c9055d523b94dd0dd20cb2d59ce039.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f6c9055d523b94dd0dd20cb2d59ce039.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4956
    • C:\Users\Admin\AppData\Local\Temp\Stage2.exe
      "C:\Users\Admin\AppData\Local\Temp\Stage2.exe" x -y -oC:\Users\Admin\AppData\Local\Temp -pxnq8rPMxVI87ciGwWJHxRTy3iauHcIirteOOELv3B5vkS9kJoHBUAahY1dWxj8yA
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3044
    • C:\Users\Admin\AppData\Local\Temp\Stage1.exe
      "C:\Users\Admin\AppData\Local\Temp\Stage1.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2200
      • C:\Users\Admin\Desktop\MSDCSC\msdcsc.exe
        "C:\Users\Admin\Desktop\MSDCSC\msdcsc.exe"
        3⤵
        • Modifies security service
        • 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
        • Suspicious use of WriteProcessMemory
        PID:3616
        • C:\Windows\SysWOW64\notepad.exe
          notepad
          4⤵
          • System Location Discovery: System Language Discovery
          PID:4004
  • C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
    "C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSI2IiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDU5MjEiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODE5ODA3NzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI0OTg4MDA2MzIzIi8-PC9hcHA-PC9yZXF1ZXN0Pg
    1⤵
    • System Location Discovery: System Language Discovery
    • System Network Configuration Discovery: Internet Connection Discovery
    PID:2284

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\Stage1.exe

    Filesize

    350KB

    MD5

    1a3a42d3d621acd0cce4e26240cc5331

    SHA1

    02f88aa3ec75ea70e3ac41268127d9e6eb07c1b9

    SHA256

    f96860108478891f56d8e17d2931a6f4ce9c10a9eade93acc1d7383aff83247a

    SHA512

    7a104d244128c8ce293a652a247d9351c9d38c9686b2090964898bcfa7c3fd44557f7259e789f29c332a0c099a2934c5b435f98b3432648d14adabf0b6be4e57

  • C:\Users\Admin\AppData\Local\Temp\Stage2.exe

    Filesize

    376KB

    MD5

    d826177f567069f085caf08bd5b3d479

    SHA1

    3b9d5af3c2e49c11bdf052ac6100e6acf7dbdfdd

    SHA256

    8be7a28c874ae1121a057b3f12fd3632c8539083d2d95cd7871f6a70e9bd5078

    SHA512

    752552e39abaf3c518f828d2c3499142b66bc06264e004b5b1cb2ff699a0c6f0d8b342fb141b43c1f7f7de1be4f3ae3b694307a565595d96da35949d552b0c4d

  • memory/2200-34-0x0000000000400000-0x00000000004EB000-memory.dmp

    Filesize

    940KB

  • memory/2200-19-0x0000000000400000-0x00000000004EB000-memory.dmp

    Filesize

    940KB

  • memory/2200-20-0x0000000000B50000-0x0000000000B51000-memory.dmp

    Filesize

    4KB

  • memory/3044-12-0x0000000000400000-0x0000000000443000-memory.dmp

    Filesize

    268KB

  • memory/3044-16-0x0000000000400000-0x0000000000443000-memory.dmp

    Filesize

    268KB

  • memory/3616-40-0x0000000000400000-0x00000000004EB000-memory.dmp

    Filesize

    940KB

  • memory/3616-49-0x0000000000400000-0x00000000004EB000-memory.dmp

    Filesize

    940KB

  • memory/3616-53-0x0000000000400000-0x00000000004EB000-memory.dmp

    Filesize

    940KB

  • memory/3616-38-0x0000000000400000-0x00000000004EB000-memory.dmp

    Filesize

    940KB

  • memory/3616-39-0x0000000000400000-0x00000000004EB000-memory.dmp

    Filesize

    940KB

  • memory/3616-52-0x0000000000400000-0x00000000004EB000-memory.dmp

    Filesize

    940KB

  • memory/3616-42-0x0000000000400000-0x00000000004EB000-memory.dmp

    Filesize

    940KB

  • memory/3616-43-0x0000000000400000-0x00000000004EB000-memory.dmp

    Filesize

    940KB

  • memory/3616-44-0x0000000000400000-0x00000000004EB000-memory.dmp

    Filesize

    940KB

  • memory/3616-45-0x0000000000400000-0x00000000004EB000-memory.dmp

    Filesize

    940KB

  • memory/3616-46-0x0000000000400000-0x00000000004EB000-memory.dmp

    Filesize

    940KB

  • memory/3616-47-0x0000000000400000-0x00000000004EB000-memory.dmp

    Filesize

    940KB

  • memory/3616-48-0x0000000000400000-0x00000000004EB000-memory.dmp

    Filesize

    940KB

  • memory/3616-51-0x0000000000400000-0x00000000004EB000-memory.dmp

    Filesize

    940KB

  • memory/3616-50-0x0000000000400000-0x00000000004EB000-memory.dmp

    Filesize

    940KB

  • memory/4004-37-0x0000000001060000-0x0000000001061000-memory.dmp

    Filesize

    4KB

  • memory/4956-36-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4956-0-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB