REM Install ArcGIS Desktop 10.4.1 with options C:\WINDOWS\system32\msiexec.exe /I "\\sul-gislab\geowares\Esri\ArcGIS_Desktop_10.4. ATAR Notes: Australia-wide Online Student Community

While now deprecated, ArcGIS 10.4 introduced several then-advanced capabilities:

This malware encrypts your entire hard drive—including years of irreplaceable GIS data and project files—and demands payment for the decryption key.