General

  • Target
    a1799891e1d46497c6aff689f8aacda09ef5e825dd700d6fce2aa3e4ddf638b6.js
  • Size 1.5MB
  • Sample241127-dcd8sstjfx
  • SHA256 a1799891e1d46497c6aff689f8aacda09ef5e825dd700d6fce2aa3e4ddf638b6
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.7B

Botnet
  • Default-NOV-24

C2
  • chongmei33.publicvm.com:2703

  • chongmei33.publicvm.com:7031

  • jinvestments.duckdns.org:2703

  • jinvestments.duckdns.org:7031

Mutex
  • AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    true

  • install_file

    Windows Update.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family
  • wshrat

C2
  • http://chongmei33.publicvm.com:7044

Targets

    • Target
      a1799891e1d46497c6aff689f8aacda09ef5e825dd700d6fce2aa3e4ddf638b6.js
    • Size 1.5MB
    • SHA256 a1799891e1d46497c6aff689f8aacda09ef5e825dd700d6fce2aa3e4ddf638b6
    • MD5 SHA1 SHA512 SSDEEP
    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • Asyncrat family

    • WSHRAT

      WSHRAT is a variant of Houdini worm and has vbs and js variants.

    • Wshrat family

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks