Analysis

  • max time kernel
    153s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 23:44

General

  • Target

    48c0f1768c382a1036e36cc8cf198dd66568eebe737acb1a7ef9072e6f02c89a.exe

  • Size

    658KB

  • MD5

    4cfcea18e8c42ce1f55d0765535efe94

  • SHA1

    674fac67b3783038d72de824a69d09c02f3be146

  • SHA256

    48c0f1768c382a1036e36cc8cf198dd66568eebe737acb1a7ef9072e6f02c89a

  • SHA512

    a69ff2bb8509084ba03d0c82ceaedb31f54fa830d258d4568567c6f3403911084a5cc74d8389cfb77987d299e4b45a1288b175feb825b6536257deacfe650b00

  • SSDEEP

    12288:y9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hd:eZ1xuVVjfFoynPaVBUR8f+kN10EBj

Malware Config

Signatures

  • Darkcomet

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

  • Modifies security service 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Disables RegEdit via registry modification 1 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.

  • Windows security modification 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 34 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\48c0f1768c382a1036e36cc8cf198dd66568eebe737acb1a7ef9072e6f02c89a.exe
    "C:\Users\Admin\AppData\Local\Temp\48c0f1768c382a1036e36cc8cf198dd66568eebe737acb1a7ef9072e6f02c89a.exe"
    1⤵
    • Modifies security service
    • Windows security bypass
    • Disables RegEdit via registry modification
    • Checks computer location settings
    • Windows security modification
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4460
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\48c0f1768c382a1036e36cc8cf198dd66568eebe737acb1a7ef9072e6f02c89a.exe" +s +h
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3484
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\48c0f1768c382a1036e36cc8cf198dd66568eebe737acb1a7ef9072e6f02c89a.exe" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:4812
    • 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:1428
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:4824
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
        PID:4068

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/1428-133-0x0000000000000000-mapping.dmp

    • memory/3484-132-0x0000000000000000-mapping.dmp

    • memory/4068-134-0x0000000000000000-mapping.dmp

    • memory/4812-135-0x0000000000000000-mapping.dmp

    • memory/4824-136-0x0000000000000000-mapping.dmp