General

  • Target
    4ef1927705d28faf8456c200397d0af6
  • Size 792KB
  • Sample240109-xjs53shfa4
  • SHA256 cd5a8de963a29d07bb003a8d03fa7ba38e5004641fe8138885c967db46bef0fc
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • quasar

Version
  • 2.1.0.0

Botnet
  • Office04

C2
  • 192.168.1.154:4782

Mutex
  • VNM_MUTEX_ph9lkMeWS6xgznetvP

Attributes
  • encryption_key

    2ABr09PX2FCCobHek8sv

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Venom Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      4ef1927705d28faf8456c200397d0af6
    • Size 792KB
    • SHA256 cd5a8de963a29d07bb003a8d03fa7ba38e5004641fe8138885c967db46bef0fc
    • MD5 SHA1 SHA512 SSDEEP
    • Contains code to disable Windows Defender

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

    • Modifies Windows Defender Real-time Protection settings

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • VenomRAT

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

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Windows security modification

    • 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