STIG ID: WN22-SO-000030 | SRG: SRG-OS-000480-GPOS-00227 | Severity: medium | CCI: | Vulnerability Id: V-254447
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.
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".
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.
For server core installations, run the following command:
Secedit /Export /Areas SecurityPolicy /CFG C:\Path\FileName.Txt
If "NewAdministratorName" is not something other than "Administrator" in the file, this is a finding.