Overview

overview

10

Static

static

1

Uni.bat

windows10-1703-x64

10

Uni.bat

windows10-2004-x64

8

Uni.bat

windows11-21h2-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    Uni.bat

  • Size

    527KB

  • Sample

    240707-zn76xayajp

  • MD5

    062c43d35d03da1e0a58a12e57651608

  • SHA1

    3e9d391f92764ad0fd03c892519254c5de3dcc89

  • SHA256

    e7d47c72c1234e87caf21fe4a554167d51d55983118d0de27bd42c66b6337334

  • SHA512

    cbbe134bc26426904e8cc6780766bf3cbfbff270348ea09e321e79b7a1c6c3162eec093291fbb76e922baff0f8f46386f9bb4789245334449cf058f35d9834bb

  • SSDEEP

    12288:2UcgbOIma9M8BbH1ZcoXdX+FBPCu1brE8tVu:2ZMOImsMuu4FKNCu1bJu

Score
10/10
quasaroffice04executionspywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Office04

C2

147.185.221.20:49485

Mutex

QSR_MUTEX_JvE0XZSeRt4R9Jub02

Attributes
  • encryption_key

    j1TnPb2vAEtvscjiBoXh

  • install_name

    $sxr-powershell.exe

  • log_directory

    $sxr-Logs

  • reconnect_delay

    3000

  • startup_key

    Powershell

  • subdirectory

    $sxr-seroxen2

Targets

    • Target

      Uni.bat

    • Size

      527KB

    • MD5

      062c43d35d03da1e0a58a12e57651608

    • SHA1

      3e9d391f92764ad0fd03c892519254c5de3dcc89

    • SHA256

      e7d47c72c1234e87caf21fe4a554167d51d55983118d0de27bd42c66b6337334

    • SHA512

      cbbe134bc26426904e8cc6780766bf3cbfbff270348ea09e321e79b7a1c6c3162eec093291fbb76e922baff0f8f46386f9bb4789245334449cf058f35d9834bb

    • SSDEEP

      12288:2UcgbOIma9M8BbH1ZcoXdX+FBPCu1brE8tVu:2ZMOImsMuu4FKNCu1bJu

    Score
    10/10
    quasaroffice04executionspywaretrojan

    • 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.

    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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks