General

  • Target
    e39ab5bca5cebce3ca9ed90beb1cc9ec94b373bc895d5b961a0138e87d4086fd
  • Size 504KB
  • Sample220511-c37scsdge2
  • SHA256 e39ab5bca5cebce3ca9ed90beb1cc9ec94b373bc895d5b961a0138e87d4086fd
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • quasar

Version
  • 2.1.0.0

Botnet
  • svhost

C2
  • myconect.ddns.net:6606

Mutex
  • VNM_MUTEX_ND6PULLW5ZVLwo1nwR

Attributes
  • encryption_key

    yaa63tXY4j55os5llHHd

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Venom Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      e39ab5bca5cebce3ca9ed90beb1cc9ec94b373bc895d5b961a0138e87d4086fd
    • Size 504KB
    • SHA256 e39ab5bca5cebce3ca9ed90beb1cc9ec94b373bc895d5b961a0138e87d4086fd
    • MD5 SHA1 SHA512
    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Quasar Payload

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • VenomRAT

      VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.

    • suricata: ET MALWARE Common RAT Connectivity Check Observed

      suricata: ET MALWARE Common RAT Connectivity Check Observed

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Drops desktop.ini file(s)

    • 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 v6

Tasks