General

  • Target

    https://github.com/Pyran1/RAT-Collection

  • Sample

    240807-k66cpszbke

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Office04

C2

127.0.0.1:4782

Mutex

QSR_MUTEX_n0f6at7YDD5llBKKrq

Attributes
  • encryption_key

    Vj2Id1AoFxQx5HZ3Ncui

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      https://github.com/Pyran1/RAT-Collection

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Checks computer location settings

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

    • Executes dropped EXE

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • 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