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Active Directory Security Group Audit

Posted on 2014-04-04
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Last Modified: 2014-04-11
Greetings!

I do not currently have any A.D. auditing tools in place. A security group was added to the Domain Admins security group and I am needing to find out how it was added. Is there an event in the event log I can check or an A.D. log to check this?
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Question by:Schuyler Dorsey
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by:Netman66
Netman66 earned 250 total points
ID: 39979466
Check the Security log on a DC.  There should be an event shown there that is related.
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by:Schuyler Dorsey
ID: 39979468
Thanks. Do you happen to know event codes or anything?
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by:Schuyler Dorsey
ID: 39979471
I found 4728: A member was added to a security-enabled global group.

But this seems to list individual accounts added, not security groups added to security groups.
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by:Schuyler Dorsey
ID: 39979474
Nevermind. 4728 shows the sec groups being added but I don't see an entry for the one needed. I am guessing it was done long enough ago the events were overwritten.
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by:Netman66
ID: 39979504
Sorry, using my phone to answer.  It may have been overwritten as default log size is 4Mb.
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Mahesh earned 250 total points
ID: 39979737
You need to setup audit account management, audit directory service and audit privilege use for success and failure in default domain controller policy under audit policy if you wanted to track these kind of events
Also you need to increase security events log size on domain controllers and save them on regular basis , other wise those logs will wipe out as required

Also one more thing towards your issue

Please how many accounts are member of domain admins and built-in administrators group in active directory
Some one who has membership of these groups only can add \ remove new accounts \ groups in domain admins \ enterprise admins and built-in administrators

You need to remove unwanted accounts from these well known high privileged groups other wise one can modify AD and also can cleanup security events as well

Please check how to setup auditing on Domain controllers
http://blogs.technet.com/b/askpfeplat/archive/2012/04/22/who-moved-the-ad-cheese.aspx
http://technet.microsoft.com/en-us/library/cc731607(v=ws.10).aspx

Mahesh.
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by:McKnife
ID: 39980055
And to find out the event ID: simply add a test account/group and see what gets logged.
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