Anonymous Logon as Subject Expand / Collapse
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Posted 5/5/2011 8:12:04 AM
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Last Login: 5/3/2011 1:04:29 PM
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Dear all,

I d like to know why I have anonymous logon in my DC logs 4738 (and also 4723).

Hereafter an example of these logs (in CEF format)

Thanks

Time (Event Time)deviceEventClassIdnamecategoryOutcomesourceNtDomainsourceUserNamesourceUserIddestinationHostNamedestinationAddressdestinationNtDomaindestinationUserIddeviceCustomString2deviceHostNamedeviceNtDomaindestinationUserNamead.Target_,Account:Security_,ID
2011/05/02 08:00:02 CESTMicrosoft-Windows-Security-Auditing:4738A user account was changed./SuccessNT AUTHORITYANONYMOUS LOGON0x1888ae8aDC3xx0x1888ae8aAccount Management:User Account ManagementDC3NT AUTHORITYBOBS-1-5-21-3122485630-3570510796-1348103765-14966
2011/05/02 08:00:02 CESTMicrosoft-Windows-Security-Auditing:4723An attempt was made to change an account's password./SuccessNT AUTHORITYANONYMOUS LOGON0x1888ae8aDC3xx0x1888ae8aAccount Management:User Account ManagementDC3NT AUTHORITYBOBS-1-5-21-3122485630-3570510796-1348103765-14966
Post #666
Posted 5/9/2011 10:01:22 AM
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Last Login: 4/20/2009 7:57:33 AM
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I don't know why Windows does this but it does.  I just tested this on a Win2008 R2 domain.  The password change had the user as the subject but the user change event showed subject as anonymous.  don't worry abou it.  the password change API involved requires caller to correctly specify current password before being able to change to new password - user has to authenticate as self in other words
Post #670
Posted 10/26/2012 5:21:44 AM
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Can it be improved, so that filled the specific user information instead of Anonymous Logon?
This is a bug. Why in some events (4723) filled with information about the user, which resets the password, and in some cases, don't complete this information?

Jack
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