General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • Sample

    250122-e5ntdayqbp

  • MD5

    c9861630ff205557654616ce62525119

  • SHA1

    5c60d40d59b7795186022c630b232a5dcead5ef3

  • SHA256

    bfd658e5b67652b3574a7414ca89d4a4b5b15c25cd789226a6cb897351a44a53

  • SHA512

    18b660b4a927534febca8e2a4a71a872ff1762c197a304be8bdd45337d30d193ea0da3900cb36ff8fd0fb3e40bfe999d9cdd8290814edca1a4a1ea57d3dfe4d8

  • SSDEEP

    49152:tv+lL26AaNeWgPhlmVqvMQ7XSKeQRJ6CbR3LoGdYTHHB72eh2NT:tvuL26AaNeWgPhlmVqkQ7XSKeQRJ68

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

/meming-28826.portmap.host:28826

Mutex

0d852c3a-6700-4e42-85af-0da8a2a2fd2a

Attributes
  • encryption_key

    B323B6B4414256836290414EF6F85AFA580A2B68

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    System Notification Tray

  • subdirectory

    SubDir

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      c9861630ff205557654616ce62525119

    • SHA1

      5c60d40d59b7795186022c630b232a5dcead5ef3

    • SHA256

      bfd658e5b67652b3574a7414ca89d4a4b5b15c25cd789226a6cb897351a44a53

    • SHA512

      18b660b4a927534febca8e2a4a71a872ff1762c197a304be8bdd45337d30d193ea0da3900cb36ff8fd0fb3e40bfe999d9cdd8290814edca1a4a1ea57d3dfe4d8

    • SSDEEP

      49152:tv+lL26AaNeWgPhlmVqvMQ7XSKeQRJ6CbR3LoGdYTHHB72eh2NT:tvuL26AaNeWgPhlmVqkQ7XSKeQRJ68

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Checks computer location settings

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

    • Executes dropped EXE

MITRE ATT&CK Enterprise v15

Tasks