General

  • Target
    syn.bat
  • Size 9.3MB
  • Sample260103-cdf84sgx6b
  • SHA256 2c202d0e153b53f5ac2ee8c1da23e0d5b3c8ed8ebf26e6683ccd88ee40216ba5
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • quasar

Version
  • 2.4.2

Botnet
  • Office04

C2
  • cooller-47026.portmap.host:47026

Mutex
  • 59a901ba-cb86-4a05-b7fb-658ebe257410

Attributes
  • encryption_key

    66306632E743BA52A6AF15A1A9004C72C82CC3CE

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      syn.bat
    • Size 9.3MB
    • SHA256 2c202d0e153b53f5ac2ee8c1da23e0d5b3c8ed8ebf26e6683ccd88ee40216ba5
    • MD5 SHA1 SHA512 SSDEEP
    • Detects DonutLoader

    • DonutLoader

      DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.

    • Donutloader family

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Checks computer location settings

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

    • Indicator Removal: Clear Windows Event Logs

      Clear Windows Event Logs to hide the activity of an intrusion.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v16

Tasks