hello eshesse, there are two potentially malicious extensions present under firefox > addons > extensions: Addons Engine 3.0.1& Lyrics Seeker 1.131. please keep them disabled or remove them if possible and also go to the windows control panel / programs and remove all toolbars or potentially unwanted software from there.

in addition run a full scan of your system with the security software that you have in place and different other tools like the free version of malwarebytes & adwcleaner.

Troubleshoot Firefox issues caused by malware

Que antivirus usas? si es eset nod sigue estos pasos 1. Abres tu antivirus eset nod 2. Vas a configuración y buscas configuración avanzada y le das click. 3. te vas a la pestaña donde dice INTERNET Y CORREO ELECTRONICO. 4. de ahi buscas filtrado de protocolo y ahi mismo buscas aplicaciones excluidas. 5. buscas en la ventana de la derecha donde estan los programas el mozilla firefox le pones un check al cuadro que le corresponde y luego aceptar. luego abres tu explorador mozilla y te daras cuenta que el problema esta resuelto, cualquier duda me escribes a mi correo

email address removed for privacy concerns-feer56

I have removed toolbars, but I don't find the addon engine anywhere in the add-ons manager. How does one remove an unwanted addon, I have some disabled, but have no idea how to remove them.

I have run malware bytes, avira scan, and Sophos virus removal scan. I should say that this computer was scrambled by the cryptlocker ransomware, and it was removed, but any affected files are apparently unrecoverable.

in this case i think it might be better to start from scratch, to reformat the harddrive & install a clean system again...