General

  • Target

    http://openvpn.net/client

  • Sample

    250116-w7yvsstjet

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

10.127.0.48:4782

Mutex

9b225906-1617-49ef-bb3a-e8f6ef2a81c1

Attributes
  • encryption_key

    1B774F3185F3A42FCDB51EF7371C864A93FF4A01

  • install_name

    Chrome.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Google Chrome

  • subdirectory

    Google

Extracted

Family

quasar

Version

1.4.1

Botnet

sfdih

C2

10.127.0.48:4782

Mutex

7c2c56df-01fe-4a99-8343-64e9423c0c42

Attributes
  • encryption_key

    1B774F3185F3A42FCDB51EF7371C864A93FF4A01

  • install_name

    Chrome.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Google Chrome

  • subdirectory

    Google

Targets

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Drops file in Drivers directory

    • 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

    • Mark of the Web detected: This indicates that the page was originally saved or cloned.

    • Drops file in System32 directory

    • Enumerates processes with tasklist

MITRE ATT&CK Enterprise v15

Tasks