File mistaken

A few months ago I saw this error when Avast! said that the winlogin application is malware.(File Path:C:\Windows\system32\winlogin.exe)Also when I saw that message the error no. was increasing and it was the same file every time. I’ve fixed it that day, I just had to turn off file system shield for 10 min. I was just want to know how this error started.

??? Help!

It is somewhat hard to comment on something that happened a few months ago as any evidence is likely to be history. There is also no malware name given for the alert or what this error no. issue was/is in relation to the alert.

The winlogon.exe file is a target for some malware where it misuses the legit file for malicious purposes.

The last thing I would have done though when getting the alerts would have been to stop the file system shield as you never know going on.