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The built-in administrator account must be renamed.


Overview

Finding ID Version Rule ID IA Controls Severity
V-1115 WN12-SO-000005 SV-52857r1_rule Medium
Description
The built-in administrator account is a well-known account subject to attack. Renaming this account to an unidentified name improves the protection of this account and the system.
STIG Date
Windows Server 2012/2012 R2 Domain Controller Security Technical Implementation Guide 2020-06-16

Details

Check Text ( C-47174r2_chk )
Verify the effective setting in Local Group Policy Editor.
Run "gpedit.msc".

Navigate to Local Computer Policy -> Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options.

If the value for "Accounts: Rename administrator account" is not set to a value other than "Administrator", this is a finding.
Fix Text (F-45783r1_fix)
Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Accounts: Rename administrator account" to a name other than "Administrator".