If you haven't already done so you might want to scan your entire computer for virus, if you just picked this up from the background scanner. The file could have been infected from a virus that was already on your computer.
Also make sure your virus scanner is up to date. Seems like I remember Norton falsely indentifying it as a virus sometime in the past. You might want to do a quick search on google about alcohol 120 false virus or something like that.
If neither of these apply to you then surely let Alcohol Soft know because it is a great program.
'01 Bullitt #0054