General

  • Target

    Build-Client.exe

  • Size

    3.1MB

  • Sample

    241124-1tj7psxncp

  • MD5

    c34d921ff3487c05cfff4991df196535

  • SHA1

    c9c7ae70b2020a3f80996a1399b6eb160cfbf72c

  • SHA256

    2bcc519da18324c5cfde4f0e7a2e6fa3d7e8b2c3c020ced81f07460f77476ed3

  • SHA512

    35f51730586e8107a87aadf9bb902282285aabb2ef9ebd0e119d76e56a80f7608eb6bc799392a7c99cfd1e83e9d9626780b9b0bbc170888a4de43fd1cb360f88

  • SSDEEP

    49152:SvzlL26AaNeWgPhlmVqvMQ7XSK9gRJ6/bR3LoGd3kTHHB72eh2NT:SvpL26AaNeWgPhlmVqkQ7XSK9gRJ6R

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.0.113:4782

Mutex

c82ea6b0-d255-45fb-b0eb-547ab14c0e9e

Attributes
  • encryption_key

    045BFCAC42C40445C0D8EBEF569DD1BF4BB62A56

  • install_name

    Build-client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      Build-Client.exe

    • Size

      3.1MB

    • MD5

      c34d921ff3487c05cfff4991df196535

    • SHA1

      c9c7ae70b2020a3f80996a1399b6eb160cfbf72c

    • SHA256

      2bcc519da18324c5cfde4f0e7a2e6fa3d7e8b2c3c020ced81f07460f77476ed3

    • SHA512

      35f51730586e8107a87aadf9bb902282285aabb2ef9ebd0e119d76e56a80f7608eb6bc799392a7c99cfd1e83e9d9626780b9b0bbc170888a4de43fd1cb360f88

    • SSDEEP

      49152:SvzlL26AaNeWgPhlmVqvMQ7XSK9gRJ6/bR3LoGd3kTHHB72eh2NT:SvpL26AaNeWgPhlmVqkQ7XSK9gRJ6R

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Executes dropped EXE

MITRE ATT&CK Enterprise v15

Tasks