Overview

overview

10

Static

static

3

SeroXen.exe

windows10-2004-x64

8

SeroXen.exe

windows11-21h2-x64

10

Sharing

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General

  • Target

    SeroXen.exe

  • Size

    933KB

  • Sample

    240701-t4qnxaydpc

  • MD5

    a8df19d691e618c209f5c8e386deafcf

  • SHA1

    135ea4a1d3c7358f7bd6a51973c7be7ee52f0d36

  • SHA256

    821edf221e3b8fd8070cf04628e5f77507de5ecf9d1afea79375a22578b419c2

  • SHA512

    80c1989ed585c313c14b6a91847b0e8fd758b1ef3bc3550322e6b6cb561b1bd2cb461c9ceea98b3240628fe6f74c2760b2a8db5f3f81b058559a2aed57e53779

  • SSDEEP

    24576:HSsXbXtat9HdFVR1oM5fdILCF5WcQA7GUSwc:HSsDWZVJomzWEGUSP

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

      SeroXen.exe

    • Size

      933KB

    • MD5

      a8df19d691e618c209f5c8e386deafcf

    • SHA1

      135ea4a1d3c7358f7bd6a51973c7be7ee52f0d36

    • SHA256

      821edf221e3b8fd8070cf04628e5f77507de5ecf9d1afea79375a22578b419c2

    • SHA512

      80c1989ed585c313c14b6a91847b0e8fd758b1ef3bc3550322e6b6cb561b1bd2cb461c9ceea98b3240628fe6f74c2760b2a8db5f3f81b058559a2aed57e53779

    • SSDEEP

      24576:HSsXbXtat9HdFVR1oM5fdILCF5WcQA7GUSwc:HSsDWZVJomzWEGUSP

    Score
    10/10
    executionquasarseroxenspywaretrojan

    • 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

    • 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

    behavioral1behavioral2

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