Send the copy of the file to: http://www.virustotal.com/ and upload and scan. Post the scan result url in your reply.
While you are at it, also have Virus Total scan the url link using the other tab available. You might find out some interesting things about this file and the url link. If you wish, post the link for the url scan here as well.
Virus Total is free to use. I use it to clear a site as suspicious before I visit. I also use WOT (Web of Trust) add-on for firefox as a guide as to what is trustworthy or not. Here: http://www.mywot.com/
Suggest changing the the url you posted above to something like hxxp:// to protect others from what may be a malicious and dangerous link in the future. This will make the link unclickable.
Since you have Avast! installed on your system, head over to the avast! user forum here: http://forum.avast.com/index.php?PHPSESSID=cds104ivkkmqs6nq36ot8f3em4&board=4.0
This is the virus and worms help section.
I was broswing mystyle themes for Windows XP and found one that I liked. The download happened to be a .exe file. Some of the themes I download happen to contain viruses cause Avast wouls catch it before I get a chance to actually save the file. This one didn't alert Avast and I saved it for last because it was a .exe file. I launched it and saw some wierd behavor. It wanted to add .Net services in my startup. I blocked that from happenening. I knew right then it was a virus. I contained alot of the creation of files by going into safe mode. Now the problem is, is that it still modifies (as far as I know) Exlpore.exe, explorer.scf and also taskmgr.exe into a DOS application. I restored the taskmgr.exe from changing, but it still changes my explorer.exe and explorer.scf file. So I had to create a seperate explorer.exe and rename it just so get the UI to appear every time when I startup (otherwise the UI won't appear).
I need to know what the virus is so can I manually remove what files did get left on my PC.
The link to the file is: customize.org/download/files/86562/16778/kremrem.rar
I would love all the help that I could get on this one.
Note: This post was edited by a forum moderator to disable suspicious download link on 12/05/2011 at 5:13 AM PT