Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/03/2025, 19:48

General

  • Target

    JaffaCakes118_95da3ebd31c00ef9c5186a0af6796440.exe

  • Size

    752KB

  • MD5

    95da3ebd31c00ef9c5186a0af6796440

  • SHA1

    9e84a580f9af68bc1dd96431223f8d2ce87800d8

  • SHA256

    08f61de703b5962e4339d1c768c0b8fe9591c655992cb68bd9e9176e85a8488d

  • SHA512

    b0647d42c3f32363a7fe0b62298c9a1522fe8bc98be7c97da4b52f7a51bac1a7d32a458e1ddc474d8ed162f672eadaf277f4ed4a296540d672ae8dd47b1e95b6

  • SSDEEP

    12288:IyZQUGtG0ubNtDTP4E9EjX6xvRYoAP//GUF4VkJhwv/Bb14Y0IY8lLAYqKenF18:ISQyHHPV86bYT//5Xqb4Y0QBAY7z

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

203.109.175.203:100

Mutex

DC_MUTEX-38KS9JC

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    aiqNb0K2JC2x

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • 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
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Windows directory 3 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 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_95da3ebd31c00ef9c5186a0af6796440.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_95da3ebd31c00ef9c5186a0af6796440.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3196
    • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      PID:5208
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5496
    • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4244
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3840

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    752KB

    MD5

    95da3ebd31c00ef9c5186a0af6796440

    SHA1

    9e84a580f9af68bc1dd96431223f8d2ce87800d8

    SHA256

    08f61de703b5962e4339d1c768c0b8fe9591c655992cb68bd9e9176e85a8488d

    SHA512

    b0647d42c3f32363a7fe0b62298c9a1522fe8bc98be7c97da4b52f7a51bac1a7d32a458e1ddc474d8ed162f672eadaf277f4ed4a296540d672ae8dd47b1e95b6

  • C:\Windows\PCGWIN32.LI5

    Filesize

    2KB

    MD5

    5314701c9a8831f4607d9f7572131297

    SHA1

    11327be494df75d26c944118ecf0f5fca6ad7fc1

    SHA256

    292c799fccf61279bcbdfa2a30eddebb0f0573db5d76e5dd5dca6c38391dd992

    SHA512

    c3000c82d3a8fed8a76ff6e278d42f95a0d4bebc77a4b6985f82479b8afc34e7615d6aa6669a7b12920a00e7157081459a743e4045d6edfb306bcf8841561a1b

  • C:\Windows\PCGWIN32.LI5

    Filesize

    2KB

    MD5

    1ccd95cba2589665633205e35fa41bbf

    SHA1

    5e49f26dd88460aee569defd9021d33bce5179b2

    SHA256

    699ffa49894c675ae218886d3570108611c30a829993786641b65f71f29a3151

    SHA512

    ed2af428b1d0ec687dab31f4e64eb226f15711bbf3746fb2cc2959056ee3d4579ab855f45c989d856d3354879e817a0fbc42063ed691684206a85b7afe5d9c5e

  • C:\Windows\PCGWIN32.LI5

    Filesize

    2KB

    MD5

    86f689077f3656362167d47a7f5fa840

    SHA1

    dd802597f921a71d6ec65aa31a7948a14fd0222a

    SHA256

    1d2d6db8b30b18d40301d915cdf2c42e3195c97cec48fe7ebad8de06c4560c2b

    SHA512

    a04bce8768ca071fc0ec1492c1ad2c3552f0007957b3bdaa6dd9d381bcf8dfe7ca81a3caae22d11964a6b15bbe02645203438d82ea49dc186a82e8875b494eed

  • memory/3196-12-0x0000000002280000-0x0000000002281000-memory.dmp

    Filesize

    4KB

  • memory/3196-0-0x0000000000400000-0x00000000004C9000-memory.dmp

    Filesize

    804KB

  • memory/3196-58-0x0000000000400000-0x00000000004C9000-memory.dmp

    Filesize

    804KB

  • memory/3840-53-0x0000000000D10000-0x0000000000D11000-memory.dmp

    Filesize

    4KB

  • memory/4244-37-0x0000000000400000-0x00000000004C9000-memory.dmp

    Filesize

    804KB

  • memory/4244-52-0x00000000024D0000-0x00000000024D1000-memory.dmp

    Filesize

    4KB

  • memory/4244-59-0x0000000000400000-0x00000000004C9000-memory.dmp

    Filesize

    804KB

  • memory/4244-62-0x0000000000400000-0x00000000004C9000-memory.dmp

    Filesize

    804KB

  • memory/4244-64-0x0000000000400000-0x00000000004C9000-memory.dmp

    Filesize

    804KB

  • memory/4244-66-0x0000000000400000-0x00000000004C9000-memory.dmp

    Filesize

    804KB

  • memory/4244-68-0x0000000000400000-0x00000000004C9000-memory.dmp

    Filesize

    804KB

  • memory/5208-54-0x0000000000780000-0x0000000000781000-memory.dmp

    Filesize

    4KB

  • memory/5208-56-0x0000000000400000-0x00000000004C9000-memory.dmp

    Filesize

    804KB

  • memory/5208-39-0x0000000000400000-0x00000000004C9000-memory.dmp

    Filesize

    804KB