Overview

overview

10

Static

static

1

Client-bui...ed.hta

windows10-2004-x64

10

Client-bui...ed.hta

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    Client-built_protected.hta
  • Size 11.0MB
  • Sample260811-ac48fa1gpe
  • SHA256 fc008af183968ccd5dcbc8d4102fce7ed6328315d26bc015c1e16ad5e770b9b6
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
quasaroffice04discoverypersistencespywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • Office04

C2

  • jwwnw-130-195-216-83.run.pinggy-free.link:42439

Mutex

  • 0958e6ef-7151-45e9-9df9-6e7f5f2555ca

Attributes
  • encryption_key

    893F342AFD3E08B91A0A3DA1FA6496FA9F1943C3

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      Client-built_protected.hta
    • Size 11.0MB
    • SHA256 fc008af183968ccd5dcbc8d4102fce7ed6328315d26bc015c1e16ad5e770b9b6
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    office04discoveryquasarspywaretrojanpersistence

    • 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.

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks