Avast needs to turn the heuristics knob down a bit from 11
I've mentioned it many times, but I'll say it once more: There is no need to install/use a third-party memory resident malware scanner on Windows. Defender will suffice. It's not perfect, but at least it doesn't have the agenda that many of third-party programs do: mainly justifying their existence by finding things to justify their existence by finding things to justify their existence.