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

  • Sample

    240701-txm97ssdpl

  • MD5

    3a43120a8dd1e42ff894670710bd8bc4

  • SHA1

    dbb9244231da204517f5d7a0e5ca713b64a3c175

  • SHA256

    b3db27588a80527cb09b85476ed59ce698dc9a4b6b03246160de944ecc5ca79d

  • SHA512

    15931135fd1fec93a3d77e0f28a19ca0780e7de34ab6a4f8174999cf534b4f810ace2bba0db3f2d0d0007199771b16d0c2bc3cdee48ef00a19be4705d3c26026

  • SSDEEP

    12288:qAtzNGPPmXaudwDKHYeRfRJUnYNY+yjOc3zRMh0KYQgrR3dih:3BsXvudwG4eR5yN6c3VS0KZ9

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

    • MD5

      3a43120a8dd1e42ff894670710bd8bc4

    • SHA1

      dbb9244231da204517f5d7a0e5ca713b64a3c175

    • SHA256

      b3db27588a80527cb09b85476ed59ce698dc9a4b6b03246160de944ecc5ca79d

    • SHA512

      15931135fd1fec93a3d77e0f28a19ca0780e7de34ab6a4f8174999cf534b4f810ace2bba0db3f2d0d0007199771b16d0c2bc3cdee48ef00a19be4705d3c26026

    • SSDEEP

      12288:qAtzNGPPmXaudwDKHYeRfRJUnYNY+yjOc3zRMh0KYQgrR3dih:3BsXvudwG4eR5yN6c3VS0KZ9

    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 Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks