Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/02/2025, 22:12

General

  • Target

    JaffaCakes118_1c93fe7ce6190c5224fa4e2d172f75a0.exe

  • Size

    764KB

  • MD5

    1c93fe7ce6190c5224fa4e2d172f75a0

  • SHA1

    798ee0ca8b2f8cb9835ea4aad4d67aa7faf6193d

  • SHA256

    fe5b4c40629f0661df5675187d66ab20854b94d9c18c1eddc6cf8e4655cd67c5

  • SHA512

    21958971731e48aa2c44250a4d21aab3e0a721ad8db32a9080ef301afd9e24b0b3f878a34e622d91789fffb60b787f8fceb5109bc82ee8e8929bb1ae3d702720

  • SSDEEP

    12288:cP0GTFwIh4EY1awKtBnrtw8bzRpyMObDkeFsB7pyCEbSTiTwRkfy9h4ORA/KjWHZ:cpTFwFoXBnpw8bzRhObDkvEbSDKC2UmV

Malware Config

Extracted

Family

darkcomet

Botnet

HackeR

C2

mrdn.no-ip.biz:1604

Mutex

DC_MUTEX-Q6895E2

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    kShoAudoUsCr

  • 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
  • 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.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 10 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 64 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1c93fe7ce6190c5224fa4e2d172f75a0.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1c93fe7ce6190c5224fa4e2d172f75a0.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4956
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1c93fe7ce6190c5224fa4e2d172f75a0.exe
      C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1c93fe7ce6190c5224fa4e2d172f75a0.exe
      2⤵
      • 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:3408
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1c93fe7ce6190c5224fa4e2d172f75a0.exe" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2080
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1c93fe7ce6190c5224fa4e2d172f75a0.exe" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:2632
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1756
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:2712
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • Deletes itself
        • System Location Discovery: System Language Discovery
        PID:2432
      • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4272
        • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
          C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
          4⤵
          • 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:4808
          • C:\Windows\SysWOW64\notepad.exe
            notepad
            5⤵
            • System Location Discovery: System Language Discovery
            PID:4280

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    764KB

    MD5

    1c93fe7ce6190c5224fa4e2d172f75a0

    SHA1

    798ee0ca8b2f8cb9835ea4aad4d67aa7faf6193d

    SHA256

    fe5b4c40629f0661df5675187d66ab20854b94d9c18c1eddc6cf8e4655cd67c5

    SHA512

    21958971731e48aa2c44250a4d21aab3e0a721ad8db32a9080ef301afd9e24b0b3f878a34e622d91789fffb60b787f8fceb5109bc82ee8e8929bb1ae3d702720

  • memory/2432-8-0x00000000005C0000-0x00000000005C1000-memory.dmp

    Filesize

    4KB

  • memory/3408-77-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/3408-4-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/3408-2-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/3408-1-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/3408-3-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/3408-0-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/4280-72-0x0000000000FE0000-0x0000000000FE1000-memory.dmp

    Filesize

    4KB

  • memory/4808-89-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/4808-84-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/4808-71-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/4808-74-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/4808-79-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/4808-70-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/4808-82-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/4808-80-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/4808-83-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/4808-73-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/4808-85-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/4808-86-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/4808-87-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/4808-88-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/4808-81-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/4808-90-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/4808-91-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB

  • memory/4808-92-0x0000000000400000-0x00000000004BC000-memory.dmp

    Filesize

    752KB