Please edit your Question and remove the word as this is a Public Forum. Thank You.

Please : 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.

Suggest AdwCleaner, info as per above as do not want to loose anything important.

uninstall Firefox. Then Delete the Mozilla Firefox Folders in C:\Program Files and C:\Program Files(x86) Then restart system. Note: your Firefox Profile is saved. But you should make a back up before you do : https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

Reinstall with Current Release Firefox 57.0.1 with a Full Version Installer https://www.mozilla.org/firefox/all/

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

Hi audiomatt, are you sure you are free of problem extensions? You can check on the Add-ons page. Either:

• Command+Shift+a (Windows: Ctrl+Shift+a)
• "3-bar" menu button (or Tools menu) > Add-ons
• type or paste about:addons in the address bar and press Enter/Return

In the left column of the Add-ons page, click Extensions. Then cast a critical eye over the list on the right side. Any system extensions that Firefox installs on its own are hidden from this page, so everything listed here is your choice (and your responsibility) to manage. Anything suspicious? If in doubt, disable.

You might also check the proxy setting:

• Mac: "3-bar" menu button (or Firefox menu) > Preferences
• Windows: "3-bar" menu button (or Tools menu) > Options
• Linux: "3-bar" menu button (or Edit menu) > Preferences
• Any system: type or paste about:preferences into the address bar and press Enter/Return to load it

In the search box at the top of the page on the right side, type proxy and Firefox should filter to the "Settings" button, which you can click.

The default of "Use system proxy settings" should piggyback on the same settings used by Safari. "Auto-detect" can lead to a flaky connection. You may want to try "No proxy".

Any difference?

Now, what do you mean by

audiomatt said

I can see the word "Vuze" in the omni.ja files in firefox.

How much context can you see? When I search for Vuze in the source code there seem to be several random occurrence of that four letter string:

https://dxr.mozilla.org/mozilla-release/search?q=vuze&redirect=false

So perhaps you're getting a false positive.

If you want to replace that file, I do think you need to reinstall. I think as long as you have a backup of your profile, you can take the risk of trashing Firefox.app and reinstalling from the .dmg download.

• Back up and restore information in Firefox profiles
• Installers: https://www.mozilla.org/firefox/all/
• If it has been a while: How to download and install Firefox on Mac

Keep in mind that omni.ja files are ZIP archives and you can't edit such a file. You will have to reinstall Firefox if you really edited such an archive file and move the current Firefox version to the Trash.

See also:

• https://malwaretips.com/blogs/remove-mac-os-x-virus/