¡Hola Alex!

Please see Update Firefox to the latest release for the only legit ways to update your Firefox.

When you see such scams, please take a moment to report them over at https://www.mozilla.org/en-US/about/legal/fraud-report/

¡Gracias! Alex

If you get a pop-up message asking to update Firefox or plugins or scanning for malware then such a message is likely a scam and you should never respond to such an alert to avoid getting infected with malware.

• Only update Firefox via "Help > About" or by downloading and installing Firefox from the Mozilla server and never via a pop-up or link on a web page.
• Plugins should only be updated via the plugin itself or by visiting the home page of the plugin.

Mozilla does not put Firefox downloads or update on random sites outside of *.mozilla.org nor do they do .exe patches since Firefox is also for Mac OSX and Linux.

If you had installed this Fake firefoxpatch .exe it would have infected your Windows with something like a Trojan or CryptoLocker.