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General

  • Target

    81a955c38b0a5d763002c59054844fcc30d61918259159991a6369ca9199fd56

  • Size

    252KB

  • Sample

    221126-clsbcahb6s

  • MD5

    b74660b4c8e47a8aa2bf2717055dd307

  • SHA1

    5f4ff3f54ed0a69dad66c40886152d1a79b6e79d

  • SHA256

    81a955c38b0a5d763002c59054844fcc30d61918259159991a6369ca9199fd56

  • SHA512

    8422288c834fb5374076b55141ec9ac15960b3ee2ba7a906f694929b0bed4dbd7ed43db5490c18a2de9588684d02af82cdeffef2c0f4754845e8b8d49e073cb3

  • SSDEEP

    6144:8cNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37VX:8cW7KEZlPzCy37B

Malware Config

Extracted

Family

darkcomet

Botnet

Guest15

C2

kalitoor.ddns.net:2468

kalitoor.ddns.net:1357

Mutex

X1K3LKA15CPC33

Attributes
  • InstallPath

    WINDS\system.exe

  • gencode

    z8g3vHLKaCla

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    WindowsUpdate

Targets

    • Target

      81a955c38b0a5d763002c59054844fcc30d61918259159991a6369ca9199fd56

    • Size

      252KB

    • MD5

      b74660b4c8e47a8aa2bf2717055dd307

    • SHA1

      5f4ff3f54ed0a69dad66c40886152d1a79b6e79d

    • SHA256

      81a955c38b0a5d763002c59054844fcc30d61918259159991a6369ca9199fd56

    • SHA512

      8422288c834fb5374076b55141ec9ac15960b3ee2ba7a906f694929b0bed4dbd7ed43db5490c18a2de9588684d02af82cdeffef2c0f4754845e8b8d49e073cb3

    • SSDEEP

      6144:8cNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37VX:8cW7KEZlPzCy37B

    • Darkcomet

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

    • Modifies WinLogon for persistence

    • Modifies firewall policy service

    • Modifies security service

    • Windows security bypass

    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • Executes dropped EXE

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • UPX packed file

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

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Loads dropped DLL

    • Windows security modification

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks