Pretty much. .NET 4.7.2

It's the same normal view / control pattern but with VB for the logic instead of C#.

There's also global pages with a bunch of events like error or pre/post request that probably exists in the C# version I guess, but I only remember dealing with it in VB

This particular system also comes with a pure VB batch script running on a schedule.

Just very old, frustrating to deal with, slammed in security audits.