This virus mimics Microsoft Windows Security and is called “System Tool 2011”.
This Trojan is a nasty piece of work. It hi-jacks Internet Explorer and it disables Google Chrome an Mozilla Fire Fox. It will then disable the Virus/anti spyware system so that it cannot be deleted. It will only allow you to connect to it’s website which mimics Microsoft Windows in order to steal your credit card information.
This Trojan also has it’s own icon which looks like a combination lock. It fits it very well because each time it is allowed to run it will disable another program locking you even further out of your account.
http://antoniowillia20.newsvine.com/_news/2011/01/03/5755145-new-trojan-virus-alert