Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/07/2024, 15:18

General

  • Target

    63b417b080321c8df1daf31d312a7667_JaffaCakes118.exe

  • Size

    658KB

  • MD5

    63b417b080321c8df1daf31d312a7667

  • SHA1

    df9013a6d7bc7f2f225784bb77d84f74235dda8c

  • SHA256

    6e2890cc902c7eb5a15b15190305e8b2240267ac7be27be604fc4774b7d3a7a3

  • SHA512

    93bfcc3215f11f9570b2814de66eda4937f585f13899e7c8b13b0d8127926c404d85247706624c1d90a3f8449f61b971e0539a80f47e40ee50d1ce62f062440f

  • SSDEEP

    12288:+9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hp:KZ1xuVVjfFoynPaVBUR8f+kN10EBj

Malware Config

Extracted

Family

darkcomet

Botnet

mj

C2

mandoo.no-ip.org:3366

Mutex

DC_MUTEX-CAAX3BM

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    EdPhvPEat3CM

  • install

    true

  • offline_keylogger

    true

  • password

    1443813678

  • persistence

    true

  • reg_key

    MicroUpdate

Signatures

  • 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 6 IoCs
  • Modifies security service 2 TTPs 2 IoCs
  • Windows security bypass 2 TTPs 4 IoCs
  • Disables RegEdit via registry modification 2 IoCs
  • Disables Task Manager via registry modification
  • 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 1 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).

  • Modifies registry class 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 59 IoCs
  • System policy modification 1 TTPs 3 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\63b417b080321c8df1daf31d312a7667_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\63b417b080321c8df1daf31d312a7667_JaffaCakes118.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:668
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\63b417b080321c8df1daf31d312a7667_JaffaCakes118.exe" +s +h
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4588
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\63b417b080321c8df1daf31d312a7667_JaffaCakes118.exe" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:4916
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2960
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:2380
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Deletes itself
      PID:3636
    • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
      2⤵
      • Modifies firewall policy service
      • Modifies security service
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Windows security modification
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:2640
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        3⤵
        • Modifies firewall policy service
        • Modifies security service
        • Windows security bypass
        • Disables RegEdit via registry modification
        • Adds Run key to start application
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:924
        • C:\Windows\SysWOW64\notepad.exe
          notepad
          4⤵
            PID:1816

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      658KB

      MD5

      63b417b080321c8df1daf31d312a7667

      SHA1

      df9013a6d7bc7f2f225784bb77d84f74235dda8c

      SHA256

      6e2890cc902c7eb5a15b15190305e8b2240267ac7be27be604fc4774b7d3a7a3

      SHA512

      93bfcc3215f11f9570b2814de66eda4937f585f13899e7c8b13b0d8127926c404d85247706624c1d90a3f8449f61b971e0539a80f47e40ee50d1ce62f062440f

    • memory/668-0-0x0000000002140000-0x0000000002141000-memory.dmp

      Filesize

      4KB

    • memory/668-65-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/924-62-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/1816-64-0x0000000000BC0000-0x0000000000BC1000-memory.dmp

      Filesize

      4KB

    • memory/2640-63-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3636-3-0x0000000000490000-0x0000000000491000-memory.dmp

      Filesize

      4KB