General

  • Target

    76633ce92246c62bb3df63286aa65e0efb5e6e4bc5bb5f5cf3bdbbc6514c988f

  • Size

    476KB

  • Sample

    241104-az2qtsyfqf

  • MD5

    da604719663cbe3104a8e962b6e0c1a4

  • SHA1

    e0ce2c871f1d20623c328fb16d7adbb4277f011f

  • SHA256

    76633ce92246c62bb3df63286aa65e0efb5e6e4bc5bb5f5cf3bdbbc6514c988f

  • SHA512

    847c1916b35f53a0c5d7afd9770863ed3789eb2468cb3dfdc343e8c61baacbd4679d676c8de79ebe72d38c905922d2f2a958603cd53bc921aece803d9823a287

  • SSDEEP

    12288:c3ONTjM4IvtoL1F3Q+9V/xj3CwZQ57YkQ9tnApd:oONjn1djxr5Q57Ykqt

Malware Config

Extracted

Family

quasar

Version

1.4.0.0

Botnet

winrar

C2

winrar.ydns.eu:4782

Mutex

bCniKUdDhgLnMojfQG

Attributes
  • encryption_key

    XNz8aG8ZYhW5neohUxbc

  • install_name

    Caspol.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    AppLaunch

  • subdirectory

    MonitorWindows

Targets

    • Target

      76633ce92246c62bb3df63286aa65e0efb5e6e4bc5bb5f5cf3bdbbc6514c988f

    • Size

      476KB

    • MD5

      da604719663cbe3104a8e962b6e0c1a4

    • SHA1

      e0ce2c871f1d20623c328fb16d7adbb4277f011f

    • SHA256

      76633ce92246c62bb3df63286aa65e0efb5e6e4bc5bb5f5cf3bdbbc6514c988f

    • SHA512

      847c1916b35f53a0c5d7afd9770863ed3789eb2468cb3dfdc343e8c61baacbd4679d676c8de79ebe72d38c905922d2f2a958603cd53bc921aece803d9823a287

    • SSDEEP

      12288:c3ONTjM4IvtoL1F3Q+9V/xj3CwZQ57YkQ9tnApd:oONjn1djxr5Q57Ykqt

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

MITRE ATT&CK Enterprise v15

Tasks