Overview

overview

10

Static

static

1

URLScan

urlscan

1

https://gofile.io/d/...

windows10-2004-x64

10

Sharing

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General

  • Target

    https://gofile.io/d/bVjuzb

  • Sample

    240604-zkzqcsah4y

Score
10/10
quasaremmassubdiscoveryexecutionpyinstallerspywarestealertrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

EmmasSub

C2

85.23.24.170:4782

85.23.109.34:4782

82.128.254.93:4782
Mutex

f82c7021-f558-4f6f-bbb3-fbe420c708e5

Attributes
  • encryption_key

    4DC093FC202D016F95DCEE92AAF2874F56ACC3F2

  • install_name

    RuntimeBroker.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Update

  • subdirectory

    WindowsSecureManager

Targets

    • Target

      https://gofile.io/d/bVjuzb

    Score
    10/10
    quasaremmassubdiscoveryexecutionpyinstallerspywarestealertrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Downloads MZ/PE file

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Accesses cryptocurrency files/wallets, possible credential harvesting

      spyware

    • Checks installed software on the system

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

      discovery

    • Legitimate hosting services abused for malware hosting/C2

    • 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

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Defense Evasion

Credential Access

Unsecured Credentials

2
T1552

Credentials In Files

2
T1552.001

Discovery

Query Registry

4
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Process Discovery

1
T1057

Lateral Movement

Collection

Data from Local System

2
T1005

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Resource Development

Reconnaissance

Tasks