9/02/2008

Get User's last successful and failed logon

The following VBScript will show the last successful and the last failed logon of the current user. Depending of the OS Version the event id's from eventvwr has to be customized.


Dim objNetwork : Set objNetwork = CreateObject("WScript.Network")
strComputer = "."
Dim EventTime, strUsername
strLogonSuccess = "528"
strLogonError = "529"
Set objWMIService = GetObject("winmgmts:" & "{(Security)}!\\" & strComputer & "\root\cimv2")

'Determine the last successful logon process
Set colLoggedEvents = objWMIService.ExecQuery ("Select * from Win32_NTLogEvent Where Logfile = 'Security' and EventCode = '" &strLogonSuccess &"'")
For Each objEvent in colLoggedEvents
If Not IsNull(objEvent.User) And objEvent.User = objNetwork.UserDomain &"\" &objNetwork.UserName Then
If cint(objEvent.Eventcode) = cint(strLogonSuccess) Then
Call ConvertTime(objEvent.TimeWritten)
Wscript.Echo "The last successful Logon from " &objEvent.User &" was at " &EventTime
Exit For
End If
End If
Next

'Determine the last failed logon process
Set colLoggedEvents = objWMIService.ExecQuery ("Select * from Win32_NTLogEvent Where Logfile = 'Security' and EventCode = '" &strLogonError &"'")
For Each objEvent in colLoggedEvents
'Convert username out of the eventvwr message
Call GetUsername(objEvent.Message)

'Check if username from event matches local logged in user
If lcase(cstr(strUsername)) = lcase(cstr(objNetwork.UserName)) Then
If cint(objEvent.Eventcode) = cint(strLogonError) Then
Call ConvertTime(objEvent.TimeWritten)
Wscript.Echo "The last failed Logon from " &strUsername &" was at " &EventTime
Exit For
End If
End If
Next

Function ConvertTime(datetime)
EventTime = Mid(datetime, 5, 2) & "/" & Mid(datetime, 7, 2) & "/" & _
Mid(datetime, 1, 4) & " " & Mid(datetime, 9, 2) & ":" & _
Mid(datetime, 11, 2) & "." & Mid(datetime, 13, 2)
End Function

Function GetUsername(strMessage)
strStart = InStr(strMessage,"User Name:") + 10
strEnd = InStr(strMessage,"Domain:")
strLen = strEnd - strStart

strUsername = Replace(Replace(Replace(Replace(Mid(strMessage,strStart,strLen)," ",""),vbTab, ""),VbCrLf,""), vbNewLine,"")
End Function

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