Overview

overview

10

Static

static

1

Uni.bat

windows10-1703-x64

10

Uni.bat

windows10-2004-x64

10

Uni.bat

windows11-21h2-x64

10

Sharing

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General

  • Target
    Uni.bat
  • Size 586KB
  • Sample240701-txm97ssdpl
  • SHA256 b3db27588a80527cb09b85476ed59ce698dc9a4b6b03246160de944ecc5ca79d
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
quasarseroxenexecutionspywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 15.5.0

Botnet

  • SeroXen

C2

  • 147.185.221.20:49485

Mutex

  • QSR_MUTEX_rzhQPLl57DqbMvbZp9

Attributes
  • encryption_key

    M2nw0PLpJxuyZQLyQ14p

  • install_name

    Client.exe

  • log_directory

    $sxr-Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      Uni.bat
    • Size 586KB
    • SHA256 b3db27588a80527cb09b85476ed59ce698dc9a4b6b03246160de944ecc5ca79d
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    quasarseroxenexecutionspywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • 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.

    • Drops file in System32 directory

    behavioral1behavioral2behavioral3

MITRE ATT&CK Enterprise v15

Tasks