General

  • Target

    1c3f6fdf457783325a5335780144cf45

  • Size

    534KB

  • Sample

    220718-mz3z4sbff9

  • MD5

    1c3f6fdf457783325a5335780144cf45

  • SHA1

    89385be28336082cd95cf5bf11dccb2f4b60a9f0

  • SHA256

    b443a89281aa4bb8d955cb3f2b34208332cb01243602f77a4dc323237e069455

  • SHA512

    15bdb064e65867e49e41943a95ed03214df8a0a4804b03515947e101be99317f385e9b94516fbcd5bafaaf0deb57a1a3e05f54bf5e042b38c16a1231ab3c7806

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

Office04

C2

aare.linkpc.net:2121

Mutex

VNM_MUTEX_ms1jmUFok04yY1Luqj

Attributes
  • encryption_key

    ShKJoA2iFEqsSE6ieT8z

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    0

  • startup_key

    Venom Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      1c3f6fdf457783325a5335780144cf45

    • Size

      534KB

    • MD5

      1c3f6fdf457783325a5335780144cf45

    • SHA1

      89385be28336082cd95cf5bf11dccb2f4b60a9f0

    • SHA256

      b443a89281aa4bb8d955cb3f2b34208332cb01243602f77a4dc323237e069455

    • SHA512

      15bdb064e65867e49e41943a95ed03214df8a0a4804b03515947e101be99317f385e9b94516fbcd5bafaaf0deb57a1a3e05f54bf5e042b38c16a1231ab3c7806

    • 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 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.

    • suricata: ET MALWARE Common RAT Connectivity Check Observed

      suricata: ET MALWARE Common RAT Connectivity Check Observed

    • 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 Matrix

Tasks