From 2-spyware.com
CoolStreamSearch is a browser hijacker that alters the browser’s default search engine, new tab, and homepage preferences without direct consent from the user. That’s done to reroute all search inquiries through a fake search engine by the same name. In the end, depending on user geolocation, they end up on Yahoo search or are redirected through search.onlinebars.xyz to Bing search.