General

  • Target

    Fps unlocker.exe

  • Size

    3.1MB

  • Sample

    241104-afag8syblf

  • MD5

    bf656c2e5e1e942c41fa918132faa7ab

  • SHA1

    1c2ddd815378e54db9e21dd2e61d89067c94da4f

  • SHA256

    b70c5aea64d75fc98a82b3c88cfecc6c2856f2a4987f4c1212c3fcf866ec9c9f

  • SHA512

    54bef34ab722d69f1d3b7f5316f1fbc10fc629bb134f70eecb6a368330b7b73305ef5fa0b9e83c104e6e679ccd1d6e7f5a20caf4f39e6b03d4940b4ed9540b7d

  • SSDEEP

    49152:Pv2I22SsaNYfdPBldt698dBcjHDWxNESE9k/irLoGd5pTHHB72eh2NT:Pvb22SsaNYfdPBldt6+dBcjHSxw3p

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

Inversin-43597.portmap.host:43597

Mutex

80329fd2-f063-4b06-9c7e-8dbc6278c2a3

Attributes
  • encryption_key

    744EA1A385FEBC6DA96387411B7000D77E66B075

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    java updater

  • subdirectory

    SubDir

Targets

    • Target

      Fps unlocker.exe

    • Size

      3.1MB

    • MD5

      bf656c2e5e1e942c41fa918132faa7ab

    • SHA1

      1c2ddd815378e54db9e21dd2e61d89067c94da4f

    • SHA256

      b70c5aea64d75fc98a82b3c88cfecc6c2856f2a4987f4c1212c3fcf866ec9c9f

    • SHA512

      54bef34ab722d69f1d3b7f5316f1fbc10fc629bb134f70eecb6a368330b7b73305ef5fa0b9e83c104e6e679ccd1d6e7f5a20caf4f39e6b03d4940b4ed9540b7d

    • SSDEEP

      49152:Pv2I22SsaNYfdPBldt698dBcjHDWxNESE9k/irLoGd5pTHHB72eh2NT:Pvb22SsaNYfdPBldt6+dBcjHSxw3p

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • 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.

MITRE ATT&CK Enterprise v15

Tasks