It looks like Microsoft Security Essentials, but it is not!
A new rogue "antivirus" program is circulating and it looks like Microsoft Security Essentials. It calls itself: "Security Essentials 2010" or "Internet Security 2010". The MMPC (Microsoft Malware Protection Center) calls it: "Trojan:Win32/Fakeinit"; for screen shots check the MMPC Threat Research & Response blog.
For a more technical description see the Malware Protection Center on Trojan:Win32/Fakeinit.
And remember, the only web site to get the Microsoft Security Essentials program is here: http://www.microsoft.com/security_essentials/
Have a good weekend!