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.

It is not, and I've heard of people preferring it even. Just not me. In my eyes, it's just a worse version of the C#.NET aspx views that might make OC shudder again.

Maybe more to your tastes, we also still have COBOL systems. Not quite Fortran old, but close