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 00:15

General

  • Target

    JaffaCakes118_1615b480d567a07954c274467f257000.exe

  • Size

    841KB

  • MD5

    1615b480d567a07954c274467f257000

  • SHA1

    844d3a68b7062e21f0dda12eea0536f1cf55becc

  • SHA256

    689f36685dad88807aa3b5ad0a5d9a1dc1b3c2981a8fed14f8350e7b7a4f1bb4

  • SHA512

    e6adc547973dd760d36adad09f9d0a79e30524fbd5c0db82a36c026f2274717ca8e9788bd0a8bb600cf9406630c4d45ca01ea6e0d6fa1bb21e1cc6acadc7cec1

  • SSDEEP

    12288:BDGRFBsZyYPBjRUowOrhpjW4HyzCbBZ5FYdGPKDFe/WunlZHJ1PeM9IcK2+Y9V+o:BSxifRZhvj1SClZOJ5ulZHLac5zV+S9

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

hgjjhjhhj.no-ip.biz:20000

Mutex

DC_MUTEX-ME65VJY

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    M9hkXC4EKetA

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    rundll32

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
  • 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
  • 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 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1615b480d567a07954c274467f257000.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1615b480d567a07954c274467f257000.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4020
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1615b480d567a07954c274467f257000.exe
      C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1615b480d567a07954c274467f257000.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:1360
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1615b480d567a07954c274467f257000.exe" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3888
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1615b480d567a07954c274467f257000.exe" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:4688
      • 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:4904
        • 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:2904
      • 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 WriteProcessMemory
        PID:3572
        • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
          C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
          4⤵
          • Executes dropped EXE
          • 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:3980
          • C:\Windows\SysWOW64\notepad.exe
            notepad
            5⤵
            • System Location Discovery: System Language Discovery
            PID:4772

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    841KB

    MD5

    1615b480d567a07954c274467f257000

    SHA1

    844d3a68b7062e21f0dda12eea0536f1cf55becc

    SHA256

    689f36685dad88807aa3b5ad0a5d9a1dc1b3c2981a8fed14f8350e7b7a4f1bb4

    SHA512

    e6adc547973dd760d36adad09f9d0a79e30524fbd5c0db82a36c026f2274717ca8e9788bd0a8bb600cf9406630c4d45ca01ea6e0d6fa1bb21e1cc6acadc7cec1

  • memory/1360-80-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/1360-2-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/1360-3-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/1360-4-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/1360-5-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/1360-6-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3572-68-0x0000000000400000-0x00000000004D6000-memory.dmp

    Filesize

    856KB

  • memory/3572-72-0x0000000000400000-0x00000000004D6000-memory.dmp

    Filesize

    856KB

  • memory/3980-85-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3980-90-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3980-84-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3980-75-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3980-79-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3980-78-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3980-95-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3980-94-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3980-82-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3980-86-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3980-76-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3980-96-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3980-83-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3980-87-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3980-88-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3980-89-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3980-74-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3980-91-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3980-92-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3980-93-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/4020-1-0x00000000004F0000-0x00000000004F4000-memory.dmp

    Filesize

    16KB

  • memory/4020-0-0x00000000004E0000-0x00000000004E1000-memory.dmp

    Filesize

    4KB

  • memory/4772-77-0x0000000001040000-0x0000000001041000-memory.dmp

    Filesize

    4KB