General

  • Target

    026beaf36cb34931a5e173f71873b451ef43a889c1c09aa0b071641c6c3345d3

  • Size

    15.0MB

  • Sample

    220508-jbl5xabbb6

  • MD5

    35ecc52f8d324f88c65432ca49d6f223

  • SHA1

    4102ef0264dac3521052e1acb32bca0c12162cae

  • SHA256

    026beaf36cb34931a5e173f71873b451ef43a889c1c09aa0b071641c6c3345d3

  • SHA512

    e91092fc235acda0f9d71e3867f11b3c237627aa69049a8588b3466e3efb09663eab11f046e56f9b87aaa988322c0e1d8ea1278565624c152922da8972e1a50a

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

WinDir

C2

0.tcp.ngrok.io:18130

Mutex

VNM_MUTEX_kdX9JMeh4Tx0gANlkq

Attributes
  • encryption_key

    4z4UlPgqlyr06tHY9YuZ

  • install_name

    WindowsSystemDirectoryManager.exe

  • log_directory

    JR_DIR

  • reconnect_delay

    3000

  • startup_key

    WindowsSystemDirectoryManager

  • subdirectory

    WinSysDir

Targets

    • Target

      026beaf36cb34931a5e173f71873b451ef43a889c1c09aa0b071641c6c3345d3

    • Size

      15.0MB

    • MD5

      35ecc52f8d324f88c65432ca49d6f223

    • SHA1

      4102ef0264dac3521052e1acb32bca0c12162cae

    • SHA256

      026beaf36cb34931a5e173f71873b451ef43a889c1c09aa0b071641c6c3345d3

    • SHA512

      e91092fc235acda0f9d71e3867f11b3c237627aa69049a8588b3466e3efb09663eab11f046e56f9b87aaa988322c0e1d8ea1278565624c152922da8972e1a50a

    • 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 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

    • 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.

MITRE ATT&CK Enterprise v6

Tasks