It is a kind of Adware: http://doxdesk.com/parasite/KeenValue.html

You could try to delete the file in safe mode, or just kick it out the startups by using Hijackthis or Windows MSconfig and delete it after restart.

But you should try Spybot security.kolla .de and Adaware www.lavasoft.de to get rid of the other Spyware which the downloader maybe allread downloaded