Antivirus 2009 is installed and advertised through the use of misleading web sites that attempt to make you think your computer is infected with a variety of malware. This guide contains advanced information, but has been written in such a way so that anyone can follow it. It was only written this way to provide clear, detailed, and easy to understand instructions that can be used to remove this infection for free. Rkill will search your computer for active malware infections and attempt to terminate them so that they wont interfere with the removal process. At this point you should download Malwarebytes Anti-Malware to scan your computer.
Source: https://www.bleepingcomputer.com/virus-removal/uninstall-antivirus-2009