Windows 7: What is wussa.exe ?

Hello all,
AVG has given me a message saying I have a trojan horse downloader.generic12xjl.
In my c:\windows\sysWOW64\wussa.exe.
I have tried to get info. on this (wussa.exe) but have not found any.
Can someone give me any info on this.
I have ran three other malware scans and they have not picked up on this.
Thanks for any help you can provide.

Description of the Windows Update Stand-alone Installer (Wusa.exe) and of.msu files in Windows Vista, Windows 7, Windows Server 2008 and in Windows Server 2008 R2

Thankd for the post, it Helleps.

If you're in doubt (and it never hurts to be careful), submit the file to virus total & see what they have to say.

https://www.virustotal.com/

You may also want to check the AVG website to see if other people are getting false positives on this file.