Eorezo/Tuto4PC hijacker installs a new browser called eFast rather than hijacking an existing one. The newly installed browser feels and looks very much like Chrome, no doubt because they used the Chromium open source Projects to build this browser. It also places a set of shortcuts to popular sites on your desktop which are all set to open with the eFast browser. The installer for eFast deletes all the shortcuts to Google Chrome on your taskbar and desktop, most likely hoping to confuse the user with their very similar icons.”]
Source: https://blog.malwarebytes.com/puppum/2015/10/efast-browser-hijacks-file-associations/