Sorry the Last post wasn't answered....
I had that once... The Virus had manipulated something in the registry for the .exe extenstion. But I was unable to fix it within 2 hours of fiddling around, so I decided to fresh setup the PC.
For protection of that Virus keep your software (all Adobe Products, Java, ...) on an up to date state as that one is usually distributed by drive-by infection. It's so often updated that the AV manufactors (like Mcafee) can't react fast enough.
If there any way to avoid this kind for spyware attack.
Not really, as the developers of that Spyware constantly update it to use the latest security holes. Besides that they also use typical distribution channels like spam mail and such. The chance is really big to be once infected.
What helps against being infected is to keep Windows, Adobe (Reader, Flash, Shockwave) and Java up to date.
Just used Malwarebytes to clean the PC and ran a Reg fix for the exe issue.
took about an hour, but saved me from backing up over 100GB of data.