Regedit opens the registry, HKEY _ Local _ Machine \ Software \ Microsoft \ Windows \ Current Version \ Uninstall]
Find SOSO under this item and delete it. Soso seems to be a rogue software of qq. Today, my address bar was hacked and the registration form was useless. Finally, I cleaned the plug-in with 360.
I am speechless about this rogue software. I'm sorry if it didn't work out. Let's change the browser.
I hope I can help you. Good luck!