General

  • Target

    5e43890d2a5f7ccb9728e2eec8a030131c94be13d6358a85835806306ad44952

  • Size

    716KB

  • Sample

    220418-nzf11shdf5

  • MD5

    57a24eb9bd6fcda2c033c8ca10890e09

  • SHA1

    35a011428d3a4020658c294e35527c4205ede798

  • SHA256

    5e43890d2a5f7ccb9728e2eec8a030131c94be13d6358a85835806306ad44952

  • SHA512

    4bdca657fb1faf8bc9ea9459bb022837792483abb87d3bf257609a31e91b5f59af1fa672d588f567779f3b113c1b04a6ef1f81f6ff7c9779a6b4eb917c02e67c

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

Mundo

C2

201.111.223.252:6700

Mutex

VNM_MUTEX_KJflzK0oXUK0jjdJ05

Attributes
  • encryption_key

    eSgMT4XlUNEBcxqW7GsH

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Venom Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      5e43890d2a5f7ccb9728e2eec8a030131c94be13d6358a85835806306ad44952

    • Size

      716KB

    • MD5

      57a24eb9bd6fcda2c033c8ca10890e09

    • SHA1

      35a011428d3a4020658c294e35527c4205ede798

    • SHA256

      5e43890d2a5f7ccb9728e2eec8a030131c94be13d6358a85835806306ad44952

    • SHA512

      4bdca657fb1faf8bc9ea9459bb022837792483abb87d3bf257609a31e91b5f59af1fa672d588f567779f3b113c1b04a6ef1f81f6ff7c9779a6b4eb917c02e67c

    • 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.

    • Executes dropped EXE

    • Checks computer location settings

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

    • 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