You could also check the offending/suspect file at:
VirusTotal - Multi engine on-line virus scanner and
report the findings here the URL in the Address bar of the VT results page. You can't do this with the file securely in the chest, you need to extract it to a temporary (not original) location first, see below.
Create a folder called Suspect in the C:\ drive, e.g. C:\Suspect. Now exclude that folder in the
Standard Shield, Customize, Advanced, Add, type (or copy and paste) C:\Suspect\* That will stop the standard shield scanning any file you put in that folder. You should now be able to export any file in the chest to this folder and upload it to VirusTotal without avast alerting.
For me just looking at the file name makes me think something that it does could be consider malicious. As to create a minidump in windows normally entails crashing something when it hangs. So I don't know if that is what it does as some sort of diagnostic tool.
Having just read fully what Silence posted confirms my suspicion, it is the action that could possibly be used maliciously and most likely what the generic signature is picking up in, see below...
The avast Win32:Malware-gen is generic signature (the -gen at the end of the malware name), so that is trying to catch multiple variants of the same type of malware and is a fine balance between detecting a new variant and detecting something valid as infected.
Some other AVs may also find this as suspicious also so a report from the VT results will show one way or another, but you should still report this as a probable false positive or at least should be classified differently as a [Tool] or riskware, etc.
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Send the sample to
virus@avast.com zipped and password protected with the password in email body, a link to this topic might help and false positive in the subject.
Or you can also add the file to the User Files (File, Add) section of the avast chest (if it isn't already in the chest) where it can do no harm and send it from there.
A copy of the file/s will remain in the original location, so you will need to take further action and can remove/rename that.
Send it from the User Files section of the chest (select the file, right click, email to Alwil Software). It will be uploaded (not actually emailed) to avast when the next avast auto (or manual) update is done.