Smart Fortress 2012 is a client I have gotten to know well. This virus threat is nothing new. It has taken on dozens of names over the years but it’s the same virus over and over.
It’s near impossible to track down and punish the makers of these rouges. Smart Fortress 2012 is really not all that hard to remove. Great instructions can be found on this http://www.removevirus.org/smart-fortress-2012. You may also want to look at this http://www.pctechguide.com/virus-removal/how-to-remove-smart-fortress-2012 guide as well.
I find most people hate this threat because it interferes with them running other programs on their computer. Almost all programs are blocked from running. It is for this single reason that some will be frustrated and find it hard to remove. You will most likely not be able to install antivirus software on the computer to help you remove the threat either.
Some Quick Tips on Removal
Windows has a System Restore for a reason, this is the perfect time to use it. It’s a lot like a time machine and you can send your PC back to when the virus was not installed. Be sure to run a full virus scan once done so you know you have no traces left.
If the system restore does not work for you then you can most likely install an antivirus client while in safe mode with networking. I have tested this option out a few times and it seems to work for many antivirus clients, not all but many.
You do always still have the option of doing a manual removal of Smart Fortress 2012 as well. Once you stop a single .exe file on the system the program will most likely stop running and you can then delete the rest of the virus traces and take back your computer. This process sounds a lot hard then it is.
What I would do is browse to this file path C:ProgramData\. Then sort the files and folders by date. Have the most current dates listed first. Then compare the file dates to when you got infected. Chances are there are only 1-4 files and folders around the date you were infected. Basically the folder name will not make any sense. That is most likely the file that needs to be killed off. Open the folder and re-name the files in it. Now you should re-boot your computer and the virus should no longer load.