Possible false positive webbrowser

[gun86]

Hi all. Several months ago i have downloaded "Firefox Setup 9.0.1.exe" from the original website of Mozilla. The file has a digital signature of Mozilla Corporation.

Before fhe first time i used this file, i scanned it with Malwarebytes but there was no virus found. Also several occassions later i have scanned this file with Malwarebytes and other antivirus/antispyware software, in every situation there was no virus found.

But today with the newest update of Malwarebytes i got a Trojan.FakeFireFox report when performing a full scan.

I have scanned the file within the site of Virustotal.com. All 42 virusscanners report that this file is clean. The link for the Virustotal scan: https://www.virustot...sis/1331758510/

Ive attached the logfile of the "mbam.exe /developer" scan and the rar-file with the Firefox Setup 9.0.1.exe inside it.

Please take a look at it, is it a false positive?

mbam-log-2012-03-14 (22-01-43).txt

Firefox Setup 9.0.1.rar

[nosirrah]

fixed in the next update

[gun86]

Thanks, so the "Firefox Setup 9.0.1.exe" file is definitively not a virus or some other kind of threat? What was the reason for the happening of this false/positive situation?

[shadowwar]

No it was just a false postive. Malware often copies file properties of legit files and the filters werent strong enough to prevent the legitimate file from being hit.