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.

Actually i think that the malware is gone after my scan with malware but the odd behaviours still happen when deleting the specific website it's reappear in the suggestion as soon.

I'll try to remove with the other scanners to check if anything is found. will keep in touch.

Rhum said

Actually i think that the malware is gone after my scan with malware but the odd behaviours still happen when deleting the specific website it's reappear in the suggestion as soon. I'll try to remove with the other scanners to check if anything is found. will keep in touch.

If it still keeps coming back then it is possibly buried in the registry and suggest seek professional anti-malware removal help from any of the anti-malware programs forum sites. Is very easy and is wise to do so.

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

So i've use multiple analyser and didn't find anything that fix my problem,

I've search a bit and finished by finding out that it was the database for the awesome bar that was "Hacked" removing it fixed my issues.

So to fix that kind of behaviour you have to remove place.sqlite from your user files in <userName>/Appdata/roaming/mozilla/firefox/profile/<randomname>.default-<randomnumber>/

Thanks for the support