General

  • Target

    https://github.com/quasar/Quasar

  • Sample

    240403-p6x4jsdd3z

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

10.127.0.54:4782

Mutex

76898c6c-aad7-493e-ad05-6bb072bc1ab9

Attributes
  • encryption_key

    E0AA33A7353AC58B6995079C718A83EE5609573D

  • install_name

    Twrek.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      https://github.com/quasar/Quasar

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Executes dropped EXE

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks