Security settings for groups

Hello,

I am having some issues with security settings for groups in Active Directory. When I remove users from the security of a group (e.g. change so that only domain admins can change security settings for a spesific group) the settings are overwritten within few minutes. The inheritance have been moved so this might be a script running every once in a while which overrides my changes.
What are my options to find out which account is making this changes? what event id is written when a user makes changes to the security of a group?

Thanks in advance
SkyggnaAsked:
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Rich WeisslerProfessional Troublemaker^h^h^h^h^hshooterCommented:
The event id's for a change in a group are:
Local Domain - 4737 (or 641 on older systems)
Global - 4735 (or 639 on older systems)
Universal - 4755 (or 659 on older systems)

Of course, you'll need to have auditing enabled on the domain controllers and the appropriate auditing policy defined.
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McKnifeCommented:
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SkyggnaAuthor Commented:
Thank you Razmus,
Thought this event only was for adding of users or removal of users (my bad), I will give it a try.

Best regards.
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Rich WeisslerProfessional Troublemaker^h^h^h^h^hshooterCommented:
Adding and removing users would be:
                              Add    Remove
Domain Local -   4732     4733
Global -                4728     4729
Universal -           4756     4757

Full disclosure... I have a copy of a quick reference guide for the common security event ids and kerberos codes, which has helped me in the past when querying my SCOM ACS database.  (And be aware, that link will want to collect your email address to get a copy...)
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McKnifeCommented:
No feedback on mine...nice. I advise you to read it, it could very well be the reason.
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