General

  • Target

    Update.exe

  • Size

    3.4MB

  • Sample

    231226-bt8smaahdk

  • MD5

    f18ad4d563f71b31f1671cc53254ceed

  • SHA1

    10717c0e669dfb725a227031142fea305189c741

  • SHA256

    42ade491c67312ca29a4d2ab39df56ce9dd29f6c76c8064bd2f87383e814a9eb

  • SHA512

    dff0521b3d80e1f507503a675854a87a9a3da785870485fd184532229622feceb855a55822ee68a629415e810fc77e25b58b10d25cb88c42f5215e97ad185890

  • SSDEEP

    49152:VveY52fyaSZOrPWluWBuGG5g5hNoxNESEsk/iBLoGdP7THHB72eh2NT:VvD52fyaSZOrPWluWBDG5g5hixPR/

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

127.0.0.1:8080

Mutex

deea5660-2f39-4957-bcd5-65760e4d31d5

Attributes
  • encryption_key

    8FCEDB55570386C448925A259E1B3D0E6D844CE4

  • install_name

    Update.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Update2.exe

  • subdirectory

    SubDir

Targets

    • Target

      Update.exe

    • Size

      3.4MB

    • MD5

      f18ad4d563f71b31f1671cc53254ceed

    • SHA1

      10717c0e669dfb725a227031142fea305189c741

    • SHA256

      42ade491c67312ca29a4d2ab39df56ce9dd29f6c76c8064bd2f87383e814a9eb

    • SHA512

      dff0521b3d80e1f507503a675854a87a9a3da785870485fd184532229622feceb855a55822ee68a629415e810fc77e25b58b10d25cb88c42f5215e97ad185890

    • SSDEEP

      49152:VveY52fyaSZOrPWluWBuGG5g5hNoxNESEsk/iBLoGdP7THHB72eh2NT:VvD52fyaSZOrPWluWBDG5g5hixPR/

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Executes dropped EXE

MITRE ATT&CK Enterprise v15

Tasks