From 2-spyware.com
AdvanceServices is a mac virus that belongs to the Adload malware[1] family. It has both hijacking and adware[2] capabilities. When it infiltrates the system it starts causing pop-ups, banners, and redirects in browsers. It can also change the main settings, like the homepage, new tab address, and search engine which dramatically changes the user experience.
In fact, adware created for mac computers is much more aggressive than adware created for Windows machines. That is because it can automatically download PUPs (potentially unwanted programs) or even malware without the users’ knowledge. The ads generated by the virus can also lead to dangerous pages.