Since do not have send info to Mozilla turned on from within Firefox before you posted I have no info on that.

I would think so if never asked to install it.

Please use more than 1 scanner as each uses diff tech : https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware Save your Report and google each before deleting anything as do not want to delete something you need, If need help : https://forums.malwarebytes.com/topic/9573-im-infected-what-do-i-do-now/ Post in only 1 forum, then wait.

Please let us know if this solved your issue or if need further assistance.

JATO said

This just appeared on my computer screen congratulating me for upgrading to "Download Helper" Not quite sure if this is a phishing scam.

Maybe you have one of the Download Helper related extensions installed in Firefox that is listed in https://addons.mozilla.org/en-US/firefox/search/?q=Download+Helper&appver=&platform=