OpenCandy - "OpenCandy from SweetLabs, Inc.,[1] a company based in San Diego, is an advertising software module consisting of a Microsoft Windows library that can be incorporated in a Windows Installer. When a user installs an application that has the OpenCandy library, there is an option to install additional software that it recommends (based on a scan of the user's system and geolocation).[2][3]"
It's not an exact virus, but it is an intrusive software that you downloaded.