The nasty virus can hijack your browsers, and changed your home page, new tab page, search engines, and bring up the annoying popups…
I have found one effect solution. Give it a try. It worked for me.
Go to www.bleepingcomputer.com
tab download, and search adware
download and run AdwCleaner
run the scan and clean, and complete them by rebooting your PC.
reset your browsers
help -> troubleshooting information -> reset firefox
settings -> advanced settings -> reset browser settings
tools -> internet options -> advanced -> Reset