Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/10/2022, 02:20

General

  • Target

    655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe

  • Size

    691KB

  • MD5

    69950e0d51180596a026acc2563f6edd

  • SHA1

    3f04f609b6f243d8510f21ffc851aa2ba2ba34e2

  • SHA256

    655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb

  • SHA512

    ee1d495cd883c87a897034a1addeaa79fd4ab2974fc381a95ba8837b417ec812e22c8d54ab78b6b93711fe52bf477fefab7a2e96e18e69073c9ae02875cac362

  • SSDEEP

    12288:r9AFlAd0Z+89cxTGzO4AucTD8QP2lmFSrVs9LqnKH:5AQ6Zx9cxTmOrucTIEFSpOG

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 firewall policy service 2 TTPs 6 IoCs
  • Modifies security service 2 TTPs 2 IoCs
  • Windows security bypass 2 TTPs 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks BIOS information in registry 2 TTPs 3 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.

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

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

  • Checks processor information in registry 2 TTPs 12 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs
  • System policy modification 1 TTPs 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe
    "C:\Users\Admin\AppData\Local\Temp\655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks BIOS information in registry
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Checks processor information in registry
    • Enumerates system info in registry
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1964
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Adds Run key to start application
      PID:928
    • C:\Windows\SysWOW64\explorer.exe
      "C:\Windows\SysWOW64\explorer.exe"
      2⤵
      • Modifies firewall policy service
      • Modifies security service
      • Windows security bypass
      • Checks BIOS information in registry
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious use of AdjustPrivilegeToken
      PID:1840
    • C:\Windupdt\winupdate.exe
      "C:\Windupdt\winupdate.exe"
      2⤵
      • Modifies firewall policy service
      • Modifies security service
      • Windows security bypass
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Windows security modification
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious use of AdjustPrivilegeToken
      • System policy modification
      PID:1752

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Windupdt\winupdate.exe

          Filesize

          691KB

          MD5

          69950e0d51180596a026acc2563f6edd

          SHA1

          3f04f609b6f243d8510f21ffc851aa2ba2ba34e2

          SHA256

          655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb

          SHA512

          ee1d495cd883c87a897034a1addeaa79fd4ab2974fc381a95ba8837b417ec812e22c8d54ab78b6b93711fe52bf477fefab7a2e96e18e69073c9ae02875cac362

        • C:\Windupdt\winupdate.exe

          Filesize

          691KB

          MD5

          69950e0d51180596a026acc2563f6edd

          SHA1

          3f04f609b6f243d8510f21ffc851aa2ba2ba34e2

          SHA256

          655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb

          SHA512

          ee1d495cd883c87a897034a1addeaa79fd4ab2974fc381a95ba8837b417ec812e22c8d54ab78b6b93711fe52bf477fefab7a2e96e18e69073c9ae02875cac362

        • memory/1840-136-0x0000000013140000-0x00000000131FE000-memory.dmp

          Filesize

          760KB

        • memory/1840-137-0x0000000013140000-0x00000000131FE000-memory.dmp

          Filesize

          760KB

        • memory/1840-138-0x0000000013140000-0x00000000131FE000-memory.dmp

          Filesize

          760KB

        • memory/1840-139-0x0000000013140000-0x00000000131FE000-memory.dmp

          Filesize

          760KB

        • memory/1840-142-0x0000000013140000-0x00000000131FE000-memory.dmp

          Filesize

          760KB