General

  • Target

    425e3e4f280f19e1de7ced375ab0b31dbd2ffe49ed2684ecb140918d662d58ff.exe

  • Size

    3.2MB

  • Sample

    241104-w9w4zsvhjr

  • MD5

    58abd80cc431895f2c2126f714ca3c8c

  • SHA1

    9338c3bbe9e6dd3658848c03a5d3bcf02dfbe965

  • SHA256

    425e3e4f280f19e1de7ced375ab0b31dbd2ffe49ed2684ecb140918d662d58ff

  • SHA512

    fcd8197173da2c475451f500cbea32b446d872a8553ebd76dae4ac3873ed8da149e8036cad65968f10d6719992e442e0ddfb458ce250c41521668d5117a14ec4

  • SSDEEP

    49152:S9GUKQbhUbLP/WdzmmVoNyQNKXVTHUt0ONKgDGsbolFjeTXbjuOvtXcUwowyr4T5:yUbLPudCfUj0t0ON/GUW6lJ3HdjX0

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

y20.ddns.net:5552

Mutex

081f9344-bbf0-4c0d-832c-1597fc2c5291

Attributes
  • encryption_key

    51E85A39CEAF3ACB23D073483E360B1A632697B4

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      425e3e4f280f19e1de7ced375ab0b31dbd2ffe49ed2684ecb140918d662d58ff.exe

    • Size

      3.2MB

    • MD5

      58abd80cc431895f2c2126f714ca3c8c

    • SHA1

      9338c3bbe9e6dd3658848c03a5d3bcf02dfbe965

    • SHA256

      425e3e4f280f19e1de7ced375ab0b31dbd2ffe49ed2684ecb140918d662d58ff

    • SHA512

      fcd8197173da2c475451f500cbea32b446d872a8553ebd76dae4ac3873ed8da149e8036cad65968f10d6719992e442e0ddfb458ce250c41521668d5117a14ec4

    • SSDEEP

      49152:S9GUKQbhUbLP/WdzmmVoNyQNKXVTHUt0ONKgDGsbolFjeTXbjuOvtXcUwowyr4T5:yUbLPudCfUj0t0ON/GUW6lJ3HdjX0

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Checks computer location settings

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

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks