Analysis

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

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-12-2024 03:43

General

  • Target

    d9c99d8f9fb1e88db8da1bb29acb88e2c9a944b1aa1b068930aa46060f7c305d.exe

  • Size

    3.8MB

  • MD5

    1b0941e492d84e91ea8cbef6903da5a1

  • SHA1

    56ef6fd3b1b40b1facb4e0c618d055a1d7cd1fc0

  • SHA256

    d9c99d8f9fb1e88db8da1bb29acb88e2c9a944b1aa1b068930aa46060f7c305d

  • SHA512

    4698ce8c0d0003fa8ff3a9dbb6a83dea1331a78f613bac2c713720c582a1f8c0ebb84089048dbbd82d52e356cfd73ee8e09f67b415dd20e445465aa144434332

  • SSDEEP

    98304:3i4hTLOMtHDMlANqnfVGPyhcMYg4lSiSLCQrdGLcjFjj/eWKS5h7EleIljztU/qJ:3i4hTLOMtHDMlANqnfVGPyhcMYg4lSiP

Malware Config

Signatures

  • Darkcomet

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

  • Darkcomet family
  • Checks BIOS information in registry 2 TTPs 1 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • 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 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • UPX packed file 31 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 4 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d9c99d8f9fb1e88db8da1bb29acb88e2c9a944b1aa1b068930aa46060f7c305d.exe
    "C:\Users\Admin\AppData\Local\Temp\d9c99d8f9fb1e88db8da1bb29acb88e2c9a944b1aa1b068930aa46060f7c305d.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4808
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\MkXGs.bat" "
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3116
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Mcrosoft" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\mcsft.exe" /f
        3⤵
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        PID:2076
    • C:\Users\Admin\AppData\Roaming\mcsft.exe
      "C:\Users\Admin\AppData\Roaming\mcsft.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2524
      • C:\Users\Admin\AppData\Roaming\mcsft.exe
        C:\Users\Admin\AppData\Roaming\mcsft.exe
        3⤵
        • Checks BIOS information in registry
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1936

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\MkXGs.txt

    Filesize

    135B

    MD5

    a5feca573884d76f559b996d45e8ad9a

    SHA1

    0e81a993f3af4e31d60653dc2513186f0495f1c8

    SHA256

    c98e20d46d6465febb5d29cfab51241521ea5d6cd621f5e18b9b7d6fbfac3f0f

    SHA512

    a9239648b5f15eac4d4151b6e1bdc81065eeaeb101404c2a0126f03bc87f1e6a57206bfa07a44379e9d3bba889e4497a9991ff41fb109099b01512df3dc3cbda

  • C:\Users\Admin\AppData\Roaming\mcsft.txt

    Filesize

    3.8MB

    MD5

    fac54c2058cba3a654f80f6e98160eb3

    SHA1

    27c84ab0b4ff42deaec80918241275b3968bcfa1

    SHA256

    3ac9ed3c0d0368c46dd91100fc04da952d96fc1cced9244f0d54976cf048e324

    SHA512

    d7c31ccc54453def3d7b8246474707c2c323d59904645263884a513baf30333106225eb8f0d86cd92321a34ad8132d6ebf88091ecda7250c26ee017ac8db4471

  • memory/1936-44-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-31-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-45-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-33-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-34-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-58-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-37-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-36-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-39-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-42-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-41-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-40-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-38-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-43-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-59-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-57-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-46-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-47-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-48-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-49-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-50-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-51-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-52-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-53-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-54-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-55-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1936-56-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2524-35-0x0000000000400000-0x00000000007C9000-memory.dmp

    Filesize

    3.8MB

  • memory/4808-28-0x0000000000400000-0x00000000007C9000-memory.dmp

    Filesize

    3.8MB

  • memory/4808-0-0x0000000000400000-0x00000000007C9000-memory.dmp

    Filesize

    3.8MB