Overview

overview

10

Static

static

1

SeroXen.rar

windows10-2004-x64

10

Sharing

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General

  • Target

    SeroXen.rar

  • Size

    7.4MB

  • Sample

    240701-t87g8aserl

  • MD5

    3e5e034189b129f8ffd7b6ae57982740

  • SHA1

    a099319659a4852ee87219d15bd04606660a9afa

  • SHA256

    43b56573aa46b0a5c526e41ef58f0e902074181622a7b7508fa97c447b8afcc9

  • SHA512

    578eec54ab0603ba4689590a181510e9aaf04bb3863f6283f19ff241f343ccd9cfbac8d35b7bcb65ece1d76122e0b808f90918ac468e3b4987717bd821c5b258

  • SSDEEP

    196608:zSoEufZDDXsWegc13ygKrA8Uwsqew2k8ASGh/RHrw:zSoZDDXvcwrA8KkLB/hw

Score
10/10
quasarseroxendiscoveryexecutionpersistenceprivilege_escalationspywaretrojan

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

      SeroXen.rar

    • Size

      7.4MB

    • MD5

      3e5e034189b129f8ffd7b6ae57982740

    • SHA1

      a099319659a4852ee87219d15bd04606660a9afa

    • SHA256

      43b56573aa46b0a5c526e41ef58f0e902074181622a7b7508fa97c447b8afcc9

    • SHA512

      578eec54ab0603ba4689590a181510e9aaf04bb3863f6283f19ff241f343ccd9cfbac8d35b7bcb65ece1d76122e0b808f90918ac468e3b4987717bd821c5b258

    • SSDEEP

      196608:zSoEufZDDXsWegc13ygKrA8Uwsqew2k8ASGh/RHrw:zSoZDDXvcwrA8KkLB/hw

    Score
    10/10
    quasarseroxendiscoveryexecutionpersistenceprivilege_escalationspywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

      execution

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

      persistenceprivilege_escalation

    • Executes dropped EXE

    • Loads dropped DLL

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

      discovery

    • 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

    behavioral1

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Persistence

Event Triggered Execution

1
T1546

Component Object Model Hijacking

1
T1546.015

Privilege Escalation

Event Triggered Execution

1
T1546

Component Object Model Hijacking

1
T1546.015

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks