7

It won’t hurt to follow through with the processing to ensure it has truly gone and then the combofix tool to check for other possible infection.

It would have been useful if you had send a copy of the file (or any undetected malware found in this process) to avast to help improve detections.
Send the sample to virus@avast.com zipped and password protected with password in email body and undetected malware in the subject.

Or you can also add the file to the User Files (File, Add) section of the avast chest where it can do no harm and send it from there (select the file, right click, email to Alwil Software). No need to zip and PW protect when the sample is sent from chest. A copy of the file/s will remain in the original location, so any further action you take can remove that.