Had to use a third party malware remover to remove from windows and browser.
It looks like you have picked up a PUP, a Possibly Unwanted Program. While they are annoying, they do not cause damage to your system. Some people actually want the 'Features' offered by these programs. They are usually downloaded alongside a legitimate download when you do not uncheck the option for the additional download.
Norton products concentrate on malware that can damage your system, that is why some PUPs are not detected.
The other product you used, (was it Malwarebytes?), probably is more aggressive against PUPs.
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