Running Windows 11 fully updated, and picked up a browser search hijacker which keeps setting the default search engine and the address bar search engine to "search-boss" or "search-goose". This is happening for all browsers in use including Firefox, Chrome, Edge, Opera and Brave. I can reset back to the desired search engines but later in the day or after a reboot the problem will reappear. Interestingly, when i go into browser settings to reset the search, the malware is sneaky in that it labels the redirect to search-boss as "Google".
I have repeatedly used to Norton 360, Norton Power Eraser, Malwarebytes, SpyHunter and Windows Defender to try to locate the problem and none of the programs have found anything. I have also carefully searched through the installed apps and have found nothing unknown or suspicious. Besides being annoying, i am concerned that I may be exposing myself to greater consequences while i have the problem.
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you can try "Microsoft Safety Scanner" download from microsoft itself...
It takes a little while depending on your drive. When it "find" stuff during scanning. Don't be alarmed at the end it will validate...
or/and
delete/uninstall all browers. Then manually search your drives on maps & leftovers from every browser. I did it once. removed every file with mozilla & firefox(i was using firefox). Those files linger around in many maps & places. after that a clean browser install. Make sure you don't accidently remove wrong or importent windows files.