Smitfraud.exe

System security is a type of SmitFraud (often referred to as "fake security software"). It is distributed through malicious websites, but also comes with fake video codecs (eg those promise Shockwave Flash and videos). Unlike many other examples of rogue anti-spyware, virus security system is extremely well coded pest. It causes serious damage to a compromised computer and user experience of booty.

Here is a list of symptoms.

1. Windows modules (Task Manager, Command Prompt, Registry Editor) are blocked from access.
2. Currently installed antivirus programs can not cure the infection, and are disabled by the virus. Antivirus applications become useless because they can not be opened.
3. Wallpaper is replaced by the warnings scary.
4. Windows Security Center (or, rather, his imitation) displays tooltips fear asking the user to download the software and have recommended to remove detected infections.
5. Security system uses a scanner to show false false verification system. "It is not smart enough for legitimate Windows files are listed as suspicious or very dangerous (eg svchost.exe).
6. Almost none of the installed applications can be opened while showing warnings "xyz file is infected. No installation of safety programs is made possible by reason itself. Interestingly, Internet Explorer generally works normally (at least for some time).

Here is a basic guide to remove the security system (in case you do not have a tech person to ask for help). Note: Only tested on Windows XP system.

1. In my computer, go to C: \ Documents and Settings \ All Users \ Application Data \ and look for a folder with the title Digital. Inside, there should be two files, one of them with the digital file name as the folder title. Delete the folder.
2. Reboot.
3. Click the Start button, choose Run, type MSCONFIG and click OK to launch the Microsoft Windows Configuration Utility. Open the Startup tab and find the entry with the numeric name. Uncheck the box next to him.
4. If there are entries pointing to the Program Files folder with "security system" in the path, uncheck the boxes associated.
5. Right click on My Computer. Select Properties, go to System Restore. Check "Turn off System Restore". Windows will warn you about restore points being deleted. Click OK and restart.
6. Now System Restore (by removing the hook that you placed in step 5).

Finally, do a full system scan with your antivirus (which should be able to operate for now) and delete the remaining entries of the security system virus.