Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240730-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-08-2024 08:49

General

  • Target

    7fdf52e6c29795edf3873748ade13d0e_JaffaCakes118.exe

  • Size

    548KB

  • MD5

    7fdf52e6c29795edf3873748ade13d0e

  • SHA1

    14c005aeb0015840038e38bd8f3ed8b8d0afb08f

  • SHA256

    a010cb86c49f5095e8d23a269dfaeadaa4271311fd81ae3ecbb58d8d9405f8a9

  • SHA512

    ba40011c93bc6b4610f12084b1c12612e0a6fd791a8424bd69028fd503a9feddc1546d41f78aa1a0e51c8b2f446884f59d11bb633eddeff21f417cde012878bb

  • SSDEEP

    12288:1QnZp+FguhYs1ob8SfLR18KHwbQhpZggZE6rDoa2aRTiua:CnZDN1b7JV4

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

darkcommetrat.no-ip.org:25565

Mutex

DC_MUTEX-MV4JSRU

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    UrntQd1f4RHS

  • install

    true

  • offline_keylogger

    true

  • 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
  • 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
  • UPX packed file 7 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 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 use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7fdf52e6c29795edf3873748ade13d0e_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\7fdf52e6c29795edf3873748ade13d0e_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4628
    • C:\Users\Admin\AppData\Local\Temp\svchost.exe
      C:\Users\Admin\AppData\Local\Temp\svchost.exe
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2292
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\svchost.exe" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2444
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\svchost.exe" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:3920
      • 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:3060
        • 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:3212
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3240
      • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
        "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2432

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\svchost.exe

    Filesize

    1.1MB

    MD5

    d881de17aa8f2e2c08cbb7b265f928f9

    SHA1

    08936aebc87decf0af6e8eada191062b5e65ac2a

    SHA256

    b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

    SHA512

    5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

  • memory/2292-11-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/2292-4-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/2292-7-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/2292-9-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/2292-14-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/2292-13-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/2292-15-0x00000000025D0000-0x00000000025D1000-memory.dmp

    Filesize

    4KB

  • memory/2292-77-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/3240-19-0x0000000000E40000-0x0000000000E41000-memory.dmp

    Filesize

    4KB

  • memory/4628-1-0x00000000748B0000-0x0000000074E61000-memory.dmp

    Filesize

    5.7MB

  • memory/4628-0-0x00000000748B2000-0x00000000748B3000-memory.dmp

    Filesize

    4KB

  • memory/4628-12-0x00000000748B0000-0x0000000074E61000-memory.dmp

    Filesize

    5.7MB