RE: Administrator in Domain Admins group

"James D. Stallard" <[email protected]> Tue, 8 Feb 2011 10:16:01 -0000
Newsgroups gmane.comp.security.microsoft
Message-ID <[email protected]>
IMHO you're solving the wrong problem.

The problem is not the Administrator account, it is that Shang Tsung has =
Domain Administrators he does not trust. There is little point in =
obfuscating the Administrator account or changing its password when any =
authenticated user on the Domain will be able to enumerate the members =
of the Domain Administrators Group. There is little point in disabling =
it when it can be easily re-enabled by those untrusted Domain =
Administrators.

What Shang Tsung requires is Delegation of Administration (DofA). This =
is the application of roles-based administration where each =
administrator is assigned only the rights that are specifically required =
to do their job and nothing else. This is achieved by performing a Roles =
and Responsibilities analysis which maps job functions to administrative =
access and allows the DofA designer to create appropriate delegations =
that can be assigned to those job functions. My company has specialised =
in this for years.

As an example; Shang Tsung might identify a requirement for his =
first-line helpdesk team to be granted the ability to reset the =
passwords and unlock the accounts of non-privileged users. A role group =
would be created that has those rights, on specific Organisational =
Units, and the helpdesk team group would be joined to the role group, =
thus assigning those rights.

This model is built up to include all the administrative staff, so that =
permanent Domain and Enterprise Administrators no longer exist. Servers =
are analysed to ensure that no services require the Domain Administrator =
Account and once the necessary service accounts are implemented, the =
account password can be changed and stored in a safe under management =
control.

The business can then choose when Domain Administration is actually =
required and can wrap the requirement in an appropriate change =
management mechanism.
HTH
Cheers

James D. Stallard=20



-----Original Message-----
From: [email protected] [mailto:[email protected]] =
On Behalf Of Michael Sturtz
Sent: 31 January 2011 18:16
To: Shang Tsung; [email protected]
Subject: RE: Administrator in Domain Admins group

The "Built in Administrator" account CAN be deleted however it is =
strongly cautioned against doing this.  One of the reasons is it is the =
account that is used in safe mode should a disaster occur.   If the =
built in Administrator account is locked out you can reboot the system =
in safe mode (by hitting the F8 key at startup) and still logon to the =
account and fix your system.  If you delete or remove the built in =
administrator account you will be unable to logon to the system.  I =
would recommend renaming the built in administrator account to a =
different name and then creating a new account named Administrator that =
is not a member of the Administrators or Domain Administrators group and =
is disabled.  This account is a decoy to prevent nuisance attacks on =
your default administrator account. =20
Michael Sturtz

-----Original Message-----
From: [email protected] [mailto:[email protected]] =
On Behalf Of Shang Tsung
Sent: Monday, January 31, 2011 7:58 AM
To: [email protected]
Subject: Administrator in Domain Admins group

After an audit, I noticed that in the Domain Admins group of our domain, =
there is an account named Administrator. As my engineers told me, this =
account is created by default when you create a new domain and cannot be =
deleted or disabled. Is this true? I am not convinced yet.

We do not like general purpose accounts like this because we lose =
accountability. I am pretty sure the password of that account is in the =
hands of people who are not supposed to have it. Each domain admin has =
his own account who is in the Domain Admins group, so there is no need =
for this Administrator account.

Can we delete it? And if yes, what would be the consequences?

Thanks,
Shang Tsung