Overview

overview

10

Static

static

10

680caf0e30...75.exe

windows7-x64

10

680caf0e30...75.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    8f808bb54b422500304dfc68b87198fc.bin
  • Size 157KB
  • Sample230227-b1py4abd43
  • SHA256 b4b0f1f6e0e6abb53ae6d49bc7f962498d5f55556e1a7e6c0844fbabbd47fc37
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

  • quasar

Attributes
  • reconnect_delay

    3000

Extracted

Family

  • quasar

Version

  • 1.4.0.0

Botnet

  • Office04

C2

  • 67.213.221.18:7812

Mutex

  • KFoYp486ql6lO6U0qI

Attributes
  • encryption_key

    OtItMK9boIZNOQTejUzg

  • install_name

    Windows Security.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Update

  • subdirectory

    Windows Services

Targets

    • Target
      680caf0e30b204544971d053b635ed0e3f1dee3332d9eab8a08b3f04cd7ecd75.exe
    • Size 439KB
    • SHA256 680caf0e30b204544971d053b635ed0e3f1dee3332d9eab8a08b3f04cd7ecd75
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    quasaroffice04spywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks