Guys, I don't think Mysoft is a spyware or worm. The reason Spyware can't delete it comes from the possibility of the host file being read-only or locked by Spybot or maybe you are running some kind of host file maintaining software or maybe you got your host file from somewhere.

I got my host file from http://someonewhocares.org/hosts and I have locked it from Spybot so it's read-only. It has an entry that is like

127.0.0.1 sitefinder.Verisign.com # Verisign has joined the game
127.0.0.1 sitefinder-idn.Verisign.com # of trying to hijack mistyped
# URLs to their site.

so what it is trying to do is block the site sitefinder.Verisign.com by pointing the site to the local computer i.e. your computer (127.0.0.1) and since it won't find the page sitefinder.Verisign.com in your computer, it will show an invalid page. You should try it in your browser and see what comes up.

At first, I thought the same as you people until I checked where spybot pointed it and as it is in the host file, it is simply blocking it.

I believe spybot finds it because the word "Verisign" is in the entry.

That's my opinion and I strongly believe it.