Virus detected by Avast after new 1.3gb update today

today, KCD sent a message about a new update, so i downloaded it, launch the game, then it just shuts down by itself.
What’s weird is that afterwards, Avast detected a virus named “IDP.GENERIC” from Bin/Win64 and quarantined it.
I’m validating the files in Steam, but it kept repeating the validation download everytime it completed

Pls help