This security setting determines which accounts can be used by a process to add entries to the security log. The security log is used to trace unauthorized system access. Misuse of this user right can result in the generation of many auditing events, potentially hiding evidence of an attack or causing a denial of service if the Audit: Shut down system immediately if unable to log security audits security policy setting is enabled. For more information see Audit: Shut down system immediately if unable to log security audits
Computer Configuration\Windows Settings\Local Policies\User Rights Assignment
Local Service Network Service.
At least Windows XP SP2, Windows Server 2003
User Rights security settings are not registry keys