Overview

overview

10

Static

static

10

Client-built.exe

windows10-1703-x64

10

Client-built.exe

windows10-2004-x64

Client-built.exe

windows11-21h2-x64

Sharing

Copy URL Twitter E-mail

General

  • Target
    Client-built.exe
  • Size 3.1MB
  • Sample241017-317yfstfnc
  • SHA256 4c64099954d9c5b52e0a8e6f4e9c8ef77d0ec794e0aa961458c8d6197dd85f2a
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • Office04

C2

  • Name123forreal-31171.portmap.host:31171

Mutex

  • f9634259-eba6-40ac-8644-2c8e433257e9

Attributes
  • encryption_key

    5FD1DA98B24B21C2214C328FD3F0A48F15BBCD2B

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Window Defender Startup

  • subdirectory

    SubDir

Targets

    • Target
      Client-built.exe
    • Size 3.1MB
    • SHA256 4c64099954d9c5b52e0a8e6f4e9c8ef77d0ec794e0aa961458c8d6197dd85f2a
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    quasaroffice04spywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Executes dropped EXE

    behavioral1behavioral2behavioral3

MITRE ATT&CK Enterprise v15

Tasks