What detected W32.Stration.AC@mm or makes you suspicious of this ?
Since this would appear to be a mass mailing worm, your firewall should be able to stop unauthorised internet connections, what is your firewall ?
What was the infected file name, where was it found e.g.
(C:\windows\system32\infected-file-name.xxx) ?
There is no standardisation of malware names so it could well be different, but if it wasn't detected, then the name is not the major concern.
If you are not getting a virus warning that you believe is a new, undetected virus then if you can zip and password protect ('virus', will do) the suspect file and send it to virus @ avast.com (no spaces), or send from the chest (after adding it to the User Files section of the chest).
Give a brief outline of the problem (possibly a link to this thread), the fact that you believe it to be a either a new, undetected virus and include the password in the body of the email. Some info on the avast version and VPS number (see about avast {right click avast icon}) will also help.
You could also check the offending/suspect file at:
VirusTotal - Multi engine on-line virus scannerOr
Jotti - Multi engine on-line virus scanner if any other scanners here detect them it is less likely to be a false positive.
You can't do this with the file in the chest, you will need to move it out.