General

  • Target
    c23863e0d7186334ca69903c6653ae06_JaffaCakes118
  • Size 606KB
  • Sample240826-eb5j2atale
  • SHA256 4e07acab1178209379b2f3926e63da1a3002c9640667907db610216bd6e02e72
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • quasar

Version
  • 2.1.0.0

Botnet
  • hacked

C2
  • 23.105.131.178:7812

Mutex
  • VNM_MUTEX_cFzA15c8rYLW8gVTCh

Attributes
  • encryption_key

    VGvtyILUmmcgl2gY0sSm

  • install_name

    Windows Security Health Service.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Update

  • subdirectory

    SubDir

Targets

    • Target
      c23863e0d7186334ca69903c6653ae06_JaffaCakes118
    • Size 606KB
    • SHA256 4e07acab1178209379b2f3926e63da1a3002c9640667907db610216bd6e02e72
    • 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

    • Adds Run key to start application

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks