General

  • Target

    6d6c9c719e2f757442374af378c343a7.exe

  • Size

    3.1MB

  • Sample

    250101-fkn43sxqfn

  • MD5

    6d6c9c719e2f757442374af378c343a7

  • SHA1

    a58a2aa6dae2dbdf64472614985cac2adce4eddb

  • SHA256

    444c97f6db0626069965d9e4ddb4bf315326954c51b123b3dc7d64084e7fb646

  • SHA512

    a3ef795e64b1d43ca300da97abc7d211e5987064c1c7cafa7a1dadcd1cb35902fb230f5b8e9a008ced4bc1d33573403bad2d99a4ccca9b6b749355110eb10210

  • SSDEEP

    49152:HwElUPhZwv68DkG17WlqTz5oqM/p7vGJfAHdkTHHB72eh2NT:HwYUPhZwv68DkG17WlqTzeqM/p6t

Malware Config

Extracted

Family

quasar

Version

1.4.2

Botnet

Office04

C2

193.31.28.181:4004

Mutex

704ccf6d-01bf-4037-a807-12a60509b1a4

Attributes
  • encryption_key

    379B83B5AFE5908E0BC4583EBB5A83D7B76D2E00

  • install_name

    Client.exe

  • log_directory

    $77-Logs

  • reconnect_delay

    3000

  • startup_key

    $77-cmd

  • subdirectory

    $77-cmd

Targets

    • Target

      6d6c9c719e2f757442374af378c343a7.exe

    • Size

      3.1MB

    • MD5

      6d6c9c719e2f757442374af378c343a7

    • SHA1

      a58a2aa6dae2dbdf64472614985cac2adce4eddb

    • SHA256

      444c97f6db0626069965d9e4ddb4bf315326954c51b123b3dc7d64084e7fb646

    • SHA512

      a3ef795e64b1d43ca300da97abc7d211e5987064c1c7cafa7a1dadcd1cb35902fb230f5b8e9a008ced4bc1d33573403bad2d99a4ccca9b6b749355110eb10210

    • SSDEEP

      49152:HwElUPhZwv68DkG17WlqTz5oqM/p7vGJfAHdkTHHB72eh2NT:HwYUPhZwv68DkG17WlqTzeqM/p6t

    • 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.

    • Deletes itself

    • Executes dropped EXE

    • Indicator Removal: File Deletion

      Adversaries may delete files left behind by the actions of their intrusion activity.

MITRE ATT&CK Enterprise v15

Tasks