General

  • Target

    Client-built.exe

  • Size

    348KB

  • Sample

    240406-ptvsnaad51

  • MD5

    694ee94d98d54cfb7ddd5d1c0207dd2f

  • SHA1

    d5138104c7f554f6e648a7eb362d4f82d34455a2

  • SHA256

    acb0b53993620d79ccae8de1aaf2971cbaf19552faeda64b3104650ea97b5bed

  • SHA512

    760c58a49f76cb5179dd1337b0b81a2c162aa556a1c319727b73954e484f0e3068783b41a4f6177183d341a8f1a5c004674e2b981ccf32323c2713165824eced

  • SSDEEP

    6144:jMNHXf500MqnKQ9DJJsubdbXodnpIYC/GixS:gd50BQ9VzidnpI9/GixS

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Office04

C2

Lunasplanet-29399.portmap.host:29399

Mutex

QSR_MUTEX_3gXoc7Rbb6gDK9k7Ha

Attributes
  • encryption_key

    Lb4wtsgHvft0Vi65JBbW

  • install_name

    SubClient.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    SubClient.exe

  • subdirectory

    SubDir

Targets

    • Target

      Client-built.exe

    • Size

      348KB

    • MD5

      694ee94d98d54cfb7ddd5d1c0207dd2f

    • SHA1

      d5138104c7f554f6e648a7eb362d4f82d34455a2

    • SHA256

      acb0b53993620d79ccae8de1aaf2971cbaf19552faeda64b3104650ea97b5bed

    • SHA512

      760c58a49f76cb5179dd1337b0b81a2c162aa556a1c319727b73954e484f0e3068783b41a4f6177183d341a8f1a5c004674e2b981ccf32323c2713165824eced

    • SSDEEP

      6144:jMNHXf500MqnKQ9DJJsubdbXodnpIYC/GixS:gd50BQ9VzidnpI9/GixS

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Executes dropped EXE

    • Looks up external IP address via web service

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

MITRE ATT&CK Enterprise v15

Tasks