Overview

overview

10

Static

static

1

syn.bat

windows11-21h2-x64

10

Sharing

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General

  • Target
    syn.bat
  • Size 9.2MB
  • Sample260813-prbxrszcph
  • SHA256 1b709bf291d25b201fe03690222d2265ab4b8b206dd68bcb0ea730c81b6877d7
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
donutloaderquasaroffice04discoveryexecutionloaderspywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 2.4.2

Botnet

  • Office04

C2

  • epicuser-38728.portmap.host:38728

Mutex

  • 16a3812c-7b4a-4d4f-83fa-f58170137424

Attributes
  • encryption_key

    E51EA8D078CBA2B90DD622D12F34AEF1A5E3B611

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      syn.bat
    • Size 9.2MB
    • SHA256 1b709bf291d25b201fe03690222d2265ab4b8b206dd68bcb0ea730c81b6877d7
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    office04discoveryexecutiondonutloaderquasarloaderspywaretrojan

    • Detects DonutLoader

      loader

    • Family: DonutLoader

      DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.

      loaderdonutloader

    • Family: Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution
    behavioral1

MITRE ATT&CK Enterprise v16

Tasks