Overview

overview

10

Static

static

10

app.mybillz.io.exe

windows10-2004-x64

10

app.mybillz.io.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    app.mybillz.io.exe
  • Size 3.1MB
  • Sample261111-kytc6sgd85
  • SHA256 b005bc9dbf90afd7d078c87803f394158165907aa4725f136bbf9e4ddfd50920
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
quasaroffice04discoveryexecutionpersistencespywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • Office04

C2

  • app.mybillz.io:443

  • www.app.mybillz.io:443

  • app.mybillz.io:80

  • www.app.mybillz.io:80

Mutex

  • c1b85d95-9be8-4626-beb8-85edb46e2f6b

Attributes
  • encryption_key

    ED3227F773701D05083B11A65776F95F93EEEF5E

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      app.mybillz.io.exe
    • Size 3.1MB
    • SHA256 b005bc9dbf90afd7d078c87803f394158165907aa4725f136bbf9e4ddfd50920
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    office04discoveryexecutionquasarpersistencespywaretrojan

    • Family: 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

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks