Something Has Wiped Out My Firefox Bookmarks & "my Documents"

Hello,

From what I remember, on 02/06/20 I was applying a patch in Norton which asked for a restart. Upon restarting, Firefox requested some sort of update. When that was finished, I discovered that all of my bookmarks in Firefox had been deleted. I also discovered that the "My Documents" folder was empty! I am assuming some sort of virus. I run the following programs every Friday (Norton, Superantispyware, Spybot, Spywareblaster, CCleaner, & Malwarebytes). After running these on 02/07/20 and not noticing anything out of the ordinary, I reloaded files into "My Documents". At some point I was asked to perform another restart. Upon restart, the files in "My Documents" had been deleted again. I would like to find out what I picked up on this PC.

 

I just downloaded the requested malware programs to the desktop. Malwarebytes requested a restart. Upon restarting, all of the malware programs were gone from the desktop. What to do now?

 

I am in Florida, USA. I have attached my logs. Thank you.

 

Do you suggest that I continue running the malware programs that I listed previously on a weekly basis?

 

Thank you. I will post to the software forum now.

 

Here is the fifth log for you to review (MGlogs).

 

Thanks again!