Should I be worried?

My Comodo Firewall picked up this on its initial install scan.

Trojware.Win32.TrojanDownloader.Small.AAC(ID = 0x45b12)

Anyone have any insight. should I tell Comodo to delete it?

 

This isnt the best place to post that. Post it over at Comodo.

 

Where was the file found? Where did it come from?

 

Try running some freeware scanners also to check if they find the same. For example: http://freedrweb.com

 

Looks like you have spyware infection.
See this : http://www.bleepingcomputer.com/forums/topic147280.html

 

Looks like some thought it was a spyware infection, but maybe not.

 

Really, from what I understood this guy was infected with spyware that AVG was not able to remove. Then removed it using SAS.

Cheers.

 

Yes you should be worried You have a parasite.

You have been given some advice, here is some more.

Do you have an existing AV and or an ASW (SAS) product?
If so update them both and then disconnect from the www!

If not get a main line AV asap and run it!

Run the scans, see what scans find if this shows remove/quarantine the parasites.

Still off line, run CFW scan again and see what it finds if anything.

Are you sure CFW didn't give you the option to delete what it found in the first place?

Also try going to online scans from McAfee / Kav or BitDefender.

If all this fails get some help from a fourm that will help you do a Hjack This evaluation and then follow their advice very very carefully.

From now on leave the AV's and ASW's in place on your set up.