userinit reports as a Trojan. Is it?

[whoabuddy]

I am getting an error message:
w32.Agent.bzs
(SBI$3E29...
File: userinit.exe (Logon Application)

It is being reported as a Trojan by Spybot. Spybot reports it and removes it after every online session. Trouble is, it comes back every time I run Spybot (each time I sign off). I have run Malwarebytes antimalware, AVG, Bitdefender 8, and the file does not show up. I tried to run Housecall, but the program kept shutting down after 3 tries, which made me think there really is a problem here.

Is this a Trojan? How can I fix it? Thanks for any help.

[Blade81]

Hi

Guess you missed this:

BEFORE you POST
(READ this Procedure BEFORE Requesting Assistance) (didn't provide hjt log )


Is your Spybot up-to-date?

Download and install TrendMicro HijackThis
* Once installed open HijackThis by clicking Start > Programs > HijackThis and click the button labeled
Do a system scan only

* Click the scan button in the lower left hand corner of the interface and HijackThis will quickly scan your system.
* Once the scan is complete the scan button will now read save log. Click this button to save the log file to your PC. Once you select where you would like to save the file it will open in your systems default text editor. Typically this application is Notepad. Post the log here.