Hi Glas Maol - I know how you feel, my PC is critical to running my business and feeding my kids - loosing Dragon was bad but thinking I might have a compromised machine (when I try real hard to be so careful) was terrifying

what has worked for me is going to the Avast software user interface - click Maintenance tab - click Virus Chest

you will see the file there - right click and “restore”

this failed 3 times but it did work a few minutes ago, so maybe Avast has updated its virus definitions