Overview

overview

10

Static

static

3

quaser.exe

windows7-x64

10

quaser.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    quaser.exe
  • Size 506KB
  • Sample240401-pc8cesef36
  • SHA256 cf9ef2af812e7e3fe4ce9d1f875279110f318d678c5f053e5d767b02eadc2694
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
quasarwelcomespywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.3.0.0

Botnet

  • welcome

C2

  • 185.144.28.50:8080

  • 80.85.154.22:8080

Mutex

  • QSR_MUTEX_KOCkZ8aUXzJpoMsKnJ

Attributes
  • encryption_key

    y4kgXabXHGVPR1ljHctQ

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    svchost

  • subdirectory

    SubDir

Targets

    • Target
      quaser.exe
    • Size 506KB
    • SHA256 cf9ef2af812e7e3fe4ce9d1f875279110f318d678c5f053e5d767b02eadc2694
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    quasarwelcomespywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks