Are these Avast!'s files?

[Bellzemos]

http://www.shrani.si/f/2l/9m/2zEDa8rX/avast.jpg

Thank you!

[igor0]

They are system files.

[Lisandro]

The Antiviru?.evt seems to be the Windows Events (Control Panel > Administrative Tools > Events).

[Bellzemos]

So, nothing to worry then. Thank you!

[Lisandro]

@Bellzemos post:4

So, nothing to worry then. Thank you!

You’re welcome