Are you using avast and AVG antivirus on the same system ?
Having two resident scanners installed is not recommended as rather than provide twice the protection it can cause conflicts that could leave you more vulnerable.
avast may disable elements to avoid conflict so there is no way to compare if avast might have detected it otherwise. Malware names also aren’t standardised so one AV could call it a different name. If it is a new variant that avast can’t detect then you should send the sample to avast.
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.
You could also check the offending/suspect file at: VirusTotal - Multi engine on-line virus scanner I feel virustotal is the better option as it uses the windows version of avast (more packers supported) and there are currently 32 different scanners.
Or Jotti - Multi engine on-line virus scanner if any other scanners here detect them it is less likely to be a false positive. Whichever scanner you use, you can’t do this with the file in the chest, you will need to move it out.
You might want to change your avatar for another, resize or use this one. We try to keep avatars around 100 X 100 for those who don’t have high resolution monitors.