Why did the antivirus complain about the file?

Question

Malware

For a long time I used the program alone. But when launched, Avast antivirus indicated that it was a program - FileRepMetagen [Malware], and placed it in quarantine.
And he didn't react before.

Answer 1

I had this trouble many times. In these cases, I put the problematic file on VirusTotal to be sniffed by fifty different antiviruses, and based on the results I make a decision. This decision most often turns out to be "write in exceptions", "mark as a false alarm."

Answer 2

The best way to find the answer to this question is to contact the relevant vendor.