Analysis

  • max time kernel
    150s
  • max time network
    122s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    12/09/2026, 11:14

General

  • Target
    jaffacakes118_3de08c1c2b3b58fc7b259ff2454a7190fa390764eed27d212ca91c736468dedc.exe
  • Size 658KB
  • Sample260912-nccebaverb
  • SHA256 3de08c1c2b3b58fc7b259ff2454a7190fa390764eed27d212ca91c736468dedc
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • darkcomet

Botnet
  • BROUTEUR

C2
  • voltazur.ddns.net:1604

Mutex
  • DC_MUTEX-CLRHTUN

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    cVxQXF1dUQRM

  • install

    true

  • offline_keylogger

    false

  • persistence

    true

  • reg_key

    MicroUpdate

rc4.plain

Signatures

  • Family: Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies firewall policy service 3 TTPs 9 IoCs
  • Windows security bypass 2 TTPs 3 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 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 2 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • 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.

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\jaffacakes118_3de08c1c2b3b58fc7b259ff2454a7190fa390764eed27d212ca91c736468dedc.exe
    "C:\Users\Admin\AppData\Local\Temp\jaffacakes118_3de08c1c2b3b58fc7b259ff2454a7190fa390764eed27d212ca91c736468dedc.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3928
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\jaffacakes118_3de08c1c2b3b58fc7b259ff2454a7190fa390764eed27d212ca91c736468dedc.exe" +s +h
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2268
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\jaffacakes118_3de08c1c2b3b58fc7b259ff2454a7190fa390764eed27d212ca91c736468dedc.exe" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:4744
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:772
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:4304
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:3696
    • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
      2⤵
      • Modifies firewall policy service
      • Windows security bypass
      • Executes dropped EXE
      • Windows security modification
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3388
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        3⤵
        • Modifies firewall policy service
        • Windows security bypass
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2400
        • C:\Windows\SysWOW64\notepad.exe
          notepad
          4⤵
          • System Location Discovery: System Language Discovery
          PID:4252
  • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    1⤵
    • Modifies firewall policy service
    • Windows security bypass
    • Executes dropped EXE
    • Windows security modification
    • System Location Discovery: System Language Discovery
    PID:3744

Network

        MITRE ATT&CK Enterprise v16

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        Downloads

        msdcsc.exe

        • Path C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        • Size 658KB
        • SHA256 3de08c1c2b3b58fc7b259ff2454a7190fa390764eed27d212ca91c736468dedc
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2400-16-0x0000000000400000-0x00000000004B2000-memory.dmp

        memory/3388-15-0x0000000002700000-0x0000000002701000-memory.dmp

        memory/3388-17-0x0000000000400000-0x00000000004B2000-memory.dmp

        memory/3696-4-0x0000000000820000-0x0000000000821000-memory.dmp

        memory/3744-20-0x0000000000400000-0x00000000004B2000-memory.dmp

        memory/3928-0-0x00000000007D0000-0x00000000007D1000-memory.dmp

        memory/3928-1-0x000000000049D000-0x000000000049F000-memory.dmp

        memory/3928-21-0x0000000000400000-0x00000000004B2000-memory.dmp

        memory/4252-18-0x0000000000A40000-0x0000000000A41000-memory.dmp