Scangoogle.ru is a custom search engine that supposedly enhances Internet search experience. And although, it looks like more famous search engines like Google, Bing or Yahoo, Scangoogle.ru is not even close to them in quality. Furthermore, annoying and intrusive pop-up ads are caused by this program.
If your search engine suddenly was changed to http://www.blpmovies.com/, then you got infected with the redirect virus. It is distributed with other free programs, that you could download from dubious sources. In so doing, user himself can’t return previous configuration manually, since malware reverts it back.