I spent part of Thanksgiving afternoon and evening, and all the next day, ridding a laptop of Antivirus System Pro — a rogue anti-spyware program. What a nasy, piece of work! It PRETENDS to be an anti-virus program, but actually installs itself as a trojan and open the way of other virii to infect, and possibly damage, your computer. One way it infects your computer is when you get a Pop-Up telling you you have an infection. If you click the red X in the upper corner to close it, that triggers the infection. DON’T. Instead, right click the item on the Task Bar and select “Close”.
I found several sites and tools that helped. I will list them below. Since this had been on the laptop for a week or more I still had to do most of the manual work using Safe Mode, as the Administrator. I keep wondering when someone will sue or cap the people who put this out, but that’s another story.
Links I found helpful:
http://www.bleepingcomputer.com/virus-removal/remove-antivirus-system-pro
http://www.ehow.com/how_5146071_manually-remove-antivirus-system-pro.html
http://remove-malware.net/how-to-remove-antivirus-system-pro-rogue-anti-spyware/
http://www.spywarevoid.com/remove-antivirus-system-pro-antivirus-system-pro-removal.html
There may be others, but the tools I downloaded and the instructions for manual work in the files, Task Manager, and registry were helpful and worked, as far as I can tell.
I Google searched on “remove antivirus system pro” (without the quotes).
If you run across this, it helps to
a) have a Mac handy to get tools and put them on a CD for use on the Windows computer
b) boot immediately into Safe Mode, or if you need to download, Safe Mode with Networking. (Press the F8 key repeatedly 5-6 times when you first get an image on the screen/monitor and use the arrow key to choose one of the above). I could not even get into Task Manager to stop the processes it was running without that.
Watch for disguised variants of the names of the files or processes you are looking for.
Read the comments people have made — there were some VERY HELPFUL ones.