Overview

overview

10

Static

static

10

rat.exe

windows10-2004-x64

10

rat.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    rat.exe
  • Size 3.1MB
  • Sample260815-s55nsagf34
  • SHA256 63d13c4bcf4f04b678508add04f4122db766a0cb2371fac1310839ff8e7f0ceb
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
quasaroffice04discoveryexecutionspywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • Office04

C2

  • https://untrustful-cheyenne-unshaveable.ngrok-free.dev:3000

  • untrustful-cheyenne-unshaveable.ngrok-free.dev:8080

  • untrustful-cheyenne-unshaveable.ngrok-free.dev:8080

Mutex

  • 0fe1f8f5-d85d-4b6a-8764-d024bca4ff6d

Attributes
  • encryption_key

    F46D72E5EA70F7CFFF1C8BCFC9D7168EDF934095

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      rat.exe
    • Size 3.1MB
    • SHA256 63d13c4bcf4f04b678508add04f4122db766a0cb2371fac1310839ff8e7f0ceb
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    office04discoveryexecutionquasarspywaretrojan

    • Family: 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.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks