General

  • Target

    https://github.com/quasar/Quasar

  • Sample

    240804-jjxxdavalg

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

10.127.1.209:4782

Mutex

3d0778bd-7708-430b-bcdf-f98271c696ed

Attributes
  • encryption_key

    B131A0FFB69231C11E0A80BFBD156074D44EF453

  • install_name

    Client.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

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Executes dropped EXE

    • Loads dropped DLL

    • 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.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks