New virus not being picked up by NAV 2012

I didn't know where to post this so I hope it's okay that I post it here.

 

Full Path: c:\Users\User\AppData\Local\Temp\IswTmp\WH\0

Developers: Microsoft Corporation

Version: 6.1.7601.17651

Identified 11/9/2011 at 5:02:04 PM

Last Used: Not Available

Startup Item: No

 

Many Users Millions of users in the Norton Community have used this file.

 

Mature: This file was released  8 months ago.

Trusted: Norton has given this file a trusted rating.

Source File: firefox.exe

File Created: 0

 

File Thumbprint - SHA: 128098d77578e37eeb744485e593196d67120b4054983a31acd577ae58842479

File Thumbprint - MD5: 99c3f8e9cc59d95666eb8d8a8b4c2beb

 

I first came across this file on a PC infected with "Home Malware Cleaner" virus.

 

It is similar to the one described here:

 

http://www.bleepingcomputer.com/forums/topic438958.html

 

I am currently running NAV 2012 and am fully updated. I'll be running Power Eraser next in hopes that I can fix it. Experience has shown me that upon a system restart (which in my case is needed to fully install PE) the program likes to change quite a few of a PC's internet settings.