I understand that we cannot persuade you otherwise.
But, for one example, "Bluesnap" payment gateway did not come with the Firefox installer.
It may have come from a dodgy extension or other source.
Or you have PUPs, and other stuff installed, with or without your knowledge.
The fact that they may be in your Firefox profile in no way means that they were bundled with the Firefox installer.
Here is the virustotal report on the Firefox installer: https://www.virustotal.com/en/file/5...is/1443968472/
If you have PUPs and other stuff on your system, they did NOT come with the Firefox installer, if that installer was obtained from the official, Mozilla source. It's just that simple.
But, without hard data, such as some basic diagnostic logs (as per the link to FRST that @CliffS provided) or logs from specific tools, such as JRT or AdwCleaner, we are just going around in circles.
I'm glad you resolved your issue to your satisfaction.
The Firefox folder can receive malware. It only offers 'proof' that Firefox was how they were downloaded (via some website or link you went to). It is very improbable that you would get malware from FF itself. If I may be another voice in the mix.
I agree with @DustSailor. You cannot get malware from Firefox directly, they are a reputable company who have been in the business a long time. You may get malware indirectly which may appear to the novice that it has come from Firefox.
Also of concern is your reasoning for ditching CCleaner. Ccleaner will not mess with passwords, it may sometimes remove valid cookies but doesn't interfere with passwords directly. A word of caution with CCleaner is you should go through all its scanning checkmarks and untick those you don't want removing. When you first install CCleaner it gives you the option to use its smart cookie scanner, I would advise against using that.
I would not rely on one program alone to test how secure your system is. Try our Malwarebytes, SuperAntiSpyware and others. These need not necessarily run in the background but can be used as second opinion scanners.
You may also want to subscribe to a few security software reviewers on Youtube. The PC Security Channel and Malware Doctor are just two that come to mind. As PC Security Channel says, "stay informed, stay secure".
Also, be wary of where you download your programs from, only get them from places with good reputation or directly from the developer.
Yes I know that, I never implied otherwise. What I was alluding to was that ccleaner would not mess with passwords themselves but can do so by removing the cookie.
so many experts so many answers, so many opinions. I know what I know at my end. Leave it be .......................................
I am now going to download FF from mozilla, then scan, lets see what happens.
If you don't UNINSTALL Firefox AND delete your existing PROFILE first, the results will be the same.I am now going to download FF from mozilla, then scan, lets see what happens.
The files you're seeing may well be in your profile folder.
So, upgrading the program itself (either on top or even a clean reinstall) will NOT affect your profile, where the bad stuff probably lurks.
IOW, deleting the program will not remove any crap that is located in the profile.
One would need to remove the profile (or at least start with a new, fresh, naked Firefox profile) AND perform a cleanup of the PUPs and junkware with suitable, specialized malware removal tools, in order to be fully rid of that stuff.
Sorry, have someone elses prob sorting out at same time, but fixed that now. I deleted all FF info when I uninstalled it. MWB found nothing, but spybot not now installed. Scan was negative via MWB, I must admit. To repeat earlier post, I downloaded FF from mozilla, always do. Updates are auto however, and thats where it went odd ..........................................