General

  • Target
    http_attack.exe
  • Size 976KB
  • Sample240503-j6pvaacf65
  • SHA256 a1486cf19b2d90186fb450ae8d1338899e6eba748dd5080fbad5a77403052aeb
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • quasar

Version
  • 1.4.1

Botnet
  • Hacked

C2
  • google-15-node.giize.com:9876

  • google-15-node.giize.com:8062

Mutex
  • eb5841f5-e743-4020-86d7-4423575fd7dd

Attributes
  • encryption_key

    070CDBCBB8132B62B93E1CB06630D9221F0FFA4A

  • install_name

    Edge.exe

  • log_directory

    Logs

  • reconnect_delay

    5000

  • startup_key

    uno

  • subdirectory

    Microsoft

Targets

    • Target
      http_attack.exe
    • Size 976KB
    • SHA256 a1486cf19b2d90186fb450ae8d1338899e6eba748dd5080fbad5a77403052aeb
    • MD5 SHA1 SHA512 SSDEEP
    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Powershell Invoke Web Request.

    • Downloads MZ/PE file

    • 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

    • 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