Overview

overview

10

Static

static

10

variant_bd...on.exe

windows10-2004-x64

10

variant_bd...on.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    variant_bd29b8106ffd.section.bin
  • Size 618KB
  • Sample261103-d1xeaa117m
  • SHA256 7f23e1a1b8721f1b49e9777a4dbcc6f46dd4d1dd0e0998062787fad53badedb6
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
quasaroffice04discoveryspywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.3.0.0

Botnet

  • Office04

C2

  • 85.121.5.9:1604

Mutex

  • QSR_MUTEX_XzZ2Z3u9qZDMKak6tj

Attributes
  • encryption_key

    zaz5X5BP9QxO4guERqLE

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      variant_bd29b8106ffd.section.bin
    • Size 618KB
    • SHA256 7f23e1a1b8721f1b49e9777a4dbcc6f46dd4d1dd0e0998062787fad53badedb6
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    office04discoveryquasarspywaretrojan

    • Family: Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Looks up external IP address via web service

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

      discovery
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks