Thanks for the reply.
I have looked at the file (Avast Antivirus calls "cardinst.exe" but in this folder there is no file with this name, there are "setup.exe") and the modification date is from 2010. All this time Avast Antivirus no detect problem, last week yes. But only Avast Antivirus, others Antivirus no.
I have downloaded another antivirus (Kaspersky free) and a antimalware (Zemana antimalware), I scan this file specifically and I've also scan the whole PC and not detect any virus.
So, it's a false positive?
Is it better to replace the file with a new one, anyway? Where can I get the file that is reliable and has no problems?
Thanks in advance and apologies for my lousy English