Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-01-2025 06:20

General

  • Target

    JaffaCakes118_632f28fdf1de3a1e531b830e5610c12f.exe

  • Size

    978KB

  • MD5

    632f28fdf1de3a1e531b830e5610c12f

  • SHA1

    05e76ccae3e599787869494007da82b398e6e7e4

  • SHA256

    ef90da3561d7571e14882aa13fbe3f4e35f0883f5570fbb0f7b6e7e62e94ab72

  • SHA512

    f5bdece4c8a2c06a6d5377a7a46f1574a51f69c96dfd636bf650673af1af21836526ed6fc3b615e28eff64622af20f86e7aded31a9d1242a411903e66948cb18

  • SSDEEP

    12288:Fw17csJbGOxU1bidOWH0VFzFpDYcvttrBt/SFZyXBR1ls/iMdDFcqm/vZwEVn:E7cm+1bidZepDYclVUoX1iaMdRepZ

Malware Config

Extracted

Family

darkcomet

Botnet

DarkRatZ

C2

serverofrats.no-ip.biz:200

Mutex

DC_MUTEX-ECB76MB

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    n9NGEAUG1eMJ

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    rundll32

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 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 2 IoCs
  • Windows security modification 2 TTPs 1 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 9 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 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_632f28fdf1de3a1e531b830e5610c12f.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_632f28fdf1de3a1e531b830e5610c12f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1440
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_632f28fdf1de3a1e531b830e5610c12f.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:4780
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_632f28fdf1de3a1e531b830e5610c12f.exe" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:316
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_632f28fdf1de3a1e531b830e5610c12f.exe" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:1812
      • 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:2696
        • 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:1188
      • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
        "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1076
        • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
          4⤵
          • Windows security bypass
          • 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:2428
          • C:\Windows\SysWOW64\notepad.exe
            notepad
            5⤵
            • System Location Discovery: System Language Discovery
            PID:2240

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

    Filesize

    978KB

    MD5

    632f28fdf1de3a1e531b830e5610c12f

    SHA1

    05e76ccae3e599787869494007da82b398e6e7e4

    SHA256

    ef90da3561d7571e14882aa13fbe3f4e35f0883f5570fbb0f7b6e7e62e94ab72

    SHA512

    f5bdece4c8a2c06a6d5377a7a46f1574a51f69c96dfd636bf650673af1af21836526ed6fc3b615e28eff64622af20f86e7aded31a9d1242a411903e66948cb18

  • C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-2878641211-696417878-3864914810-1000\699c4b9cdebca7aaea5193cae8a50098_4fc725d8-4f7d-4884-b878-08bb0ce6c800

    Filesize

    50B

    MD5

    5b63d4dd8c04c88c0e30e494ec6a609a

    SHA1

    884d5a8bdc25fe794dc22ef9518009dcf0069d09

    SHA256

    4d93c22555b3169e5c13716ca59b8b22892c69b3025aea841afe5259698102fd

    SHA512

    15ff8551ac6b9de978050569bcdc26f44dfc06a0eaf445ac70fd45453a21bdafa3e4c8b4857d6a1c3226f4102a639682bdfb71d7b255062fb81a51c9126896cb

  • memory/2240-79-0x0000000000920000-0x0000000000921000-memory.dmp

    Filesize

    4KB

  • memory/2428-84-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2428-92-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2428-98-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2428-97-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2428-76-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2428-78-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2428-77-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2428-96-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2428-81-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2428-80-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2428-95-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2428-94-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2428-85-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2428-86-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2428-87-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2428-88-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2428-89-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2428-90-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2428-91-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2428-93-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/4780-7-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/4780-3-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/4780-82-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/4780-4-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/4780-5-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/4780-6-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB