Search Settings is a potentially unwanted program (PUP), that modifies the home page and default search engine of your browser, to track and send data about your browsing habits, to 3rd party servers for targeted advertising.
Examples of infected lines found in a RSITY report:
AdwCleaner is an efficient cleaning program to get rid of malwares. Download, install and run AdwCleaner, then click the Remove button. When the scan is complete, you'll be asked to reboot your machine. A report will then be generated.
Malwarebytes' Anti-Malware (MBAM) is another disinfection tool that can help removing some malwares that AdwCleaner did not clean. Download MBAM, install it, and "Search for updates". Launch a full scan, then click on "Show results" when it's done. Select infected items that are not checked by default, and click "Remove Selected". If prompted to restart the machine, accept!
Clean your web browsers
Uninstall parasite extensions. If you have Firefox selected Tools > Add-ons > Extension tab.If you have Google Chrome: select the top right menu, then select Tools > Extensions.