Grab a copy and post it on www.virustotal.com and link the results to here.
Sounds like a fake AV program are you getting any popups?
Run the following from here
Both Stingers especially teh Fake alert 1. ( these need redonloading to update the Fake alert gets daily updates.
Getsusp make sure you add your email addy to preferences so they can contact you. This program sends suspect files to Mcafee.
Also submit the file asap to Mcafee via the process here
Moving this to the threats forum