Overview

overview

10

Static

static

3

WinLocker_....4.exe

windows7-x64

10

WinLocker_....4.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    WinLocker_Builder_0.4.exe
  • Size 1.7MB
  • Sample240801-gnyncsvgqj
  • SHA256 ff77277245800b3aa373bc1a9e789014ee50af2450133ae10c1569d84f32b2cf
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
darkcometguest16discoverypersistencerattrojan

Malware Config

Extracted

Family

  • darkcomet

Botnet

  • Guest16

C2

  • gameservice.ddns.net:4320

Mutex

  • DC_MUTEX-WBUNVXD

Attributes
  • InstallPath

    AudioDriver\taskhost.exe

  • gencode

    EWSsWwgyJrUD

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    AudioDriver

Targets

    • Target
      WinLocker_Builder_0.4.exe
    • Size 1.7MB
    • SHA256 ff77277245800b3aa373bc1a9e789014ee50af2450133ae10c1569d84f32b2cf
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    darkcometguest16discoverypersistencerattrojan

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks