Why and why were folders created from letters and numbers? Virus?

Question

Malware

Hi all! Just now I noticed that some strange folders were created on the PC. I am attaching screenshots. What is it? Virus? The most interesting thing is that some files are created according to the time when the computer was turned off!

Answer 1

These are unpacked dotnet archives, at least it looks like them

Answer 2

looks like the remnant of a distribution or update that didn't clean up after itself

Answer 3

Folders left after updates. In theory, the system should have removed them itself. Delete them. If folders are locked use Unlocker .