Windows Defender detects Trojan:Win32/Fuerboos.C!cl in Firefox cache

Is this a false positive? Its detected it at least 3 times now spanning 4 days. Each time it alerts me, I tell it to delete it, then I clear the entire Firefox cache. run Ccleaner (non-infected version) and run Malwarebytes. Only WD is detecting it.

Running Latest Firefox with Ublock Origin

ESET online scanner = clean
MBAM = clean
TDSSKiller = clean
AdwCleaner = clean
Windows Defender = clean (after I tell it to remove the file.)
Kaspersky Security Scan = Clean

Caledon Ken said:

Hi vram.

When you run MBAM are you using a custom scan to scan all files and drives?

Ken

I can't seem to find that option in the newest version, but I did go directly to the DIR in question and initiate a manual scan with MBAM and it detected nothing.

Also ran sfc /scannow to check for file corruption. All was good.

I changed MBAM to scan everything. Its coming back 100% clean.

Caledon Ken said:

Well time to send to experts and let them have a go of it.

https://support.malwarebytes.com/docs/DOC-1087


Ken

Gotta wait for it to show up again. Hasn't returned since I manually deleted the Dir in question.

The links that were seen on google indicated that it was a unique finding using windows defender.
So all the other scans were clean.
The issue is/are all of your bank accounts and passwords etc. with the uncertainty.
Threat encyclopedia changes