Virus RAT

I have a big problem! I have no rights on my computers following a RAT (virus) which multiplies in each file. And if it then hides in System32: I will no longer have a computer ! :-\ Help me please !

A RAT is not a virus.
It is a Trojan or a legitimate Remote Access Tool.

https://forum.avast.com/index.php?topic=53253.0

I have no rights on my computers following a RAT (virus)[b] which multiplies in each file[/b].
If so, you have a file infector virus