Analysis

  • max time kernel
    13s
  • max time network
    19s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    20/01/2024, 11:41

General

  • Target

    6a55e570c9897d5bcdb2da37c4d20e0b.exe

  • Size

    649KB

  • MD5

    6a55e570c9897d5bcdb2da37c4d20e0b

  • SHA1

    2742f1c6b4881aa16f02910ec46ea77de4b194da

  • SHA256

    3064890364e23210d8fa53391c004a4ad7a97d35bb20de13f12727b0a7398628

  • SHA512

    52b9952288476b32918fca301465f24007dc29f1818227399d7df7e78ea8d61ae0ffb02f661f8275a735ce033a099b640283fb07599013c7b76422a13a21a0be

  • SSDEEP

    12288:M6A84PaHhfD/tV9sj5NKR0pau9XGyu2qBVGLQyTPfhv:BAmBpVKHu0Mu9Xo20VGLVP5v

Malware Config

Signatures

  • Darkcomet

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs
  • System policy modification 1 TTPs 3 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6a55e570c9897d5bcdb2da37c4d20e0b.exe
    "C:\Users\Admin\AppData\Local\Temp\6a55e570c9897d5bcdb2da37c4d20e0b.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1648
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\6a55e570c9897d5bcdb2da37c4d20e0b.exe" +s +h
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1996
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\6a55e570c9897d5bcdb2da37c4d20e0b.exe" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:2784
    • 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:2680
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:2788
    • C:\Windupdt\winupdate.exe
      "C:\Windupdt\winupdate.exe"
      2⤵
      • Modifies security service
      • Windows security bypass
      • Executes dropped EXE
      • Loads dropped DLL
      • Windows security modification
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • System policy modification
      PID:2852
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 5 > NUL&del "C:\Users\Admin\AppData\Local\Temp\6a55e570c9897d5bcdb2da37c4d20e0b.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2800
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 5
        3⤵
        • Runs ping.exe
        PID:2568

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • \Windupdt\winupdate.exe

          Filesize

          649KB

          MD5

          6a55e570c9897d5bcdb2da37c4d20e0b

          SHA1

          2742f1c6b4881aa16f02910ec46ea77de4b194da

          SHA256

          3064890364e23210d8fa53391c004a4ad7a97d35bb20de13f12727b0a7398628

          SHA512

          52b9952288476b32918fca301465f24007dc29f1818227399d7df7e78ea8d61ae0ffb02f661f8275a735ce033a099b640283fb07599013c7b76422a13a21a0be

        • memory/1648-0-0x00000000002C0000-0x00000000002C1000-memory.dmp

          Filesize

          4KB

        • memory/1648-9-0x0000000000400000-0x00000000004B4000-memory.dmp

          Filesize

          720KB

        • memory/2852-13-0x0000000000400000-0x00000000004B4000-memory.dmp

          Filesize

          720KB

        • memory/2852-14-0x0000000000400000-0x00000000004B4000-memory.dmp

          Filesize

          720KB

        • memory/2852-15-0x0000000000400000-0x00000000004B4000-memory.dmp

          Filesize

          720KB

        • memory/2852-16-0x0000000000400000-0x00000000004B4000-memory.dmp

          Filesize

          720KB

        • memory/2852-17-0x0000000000400000-0x00000000004B4000-memory.dmp

          Filesize

          720KB