From Windows Server 2016 Security Technical Implementation Guide
Part of SRG-OS-000057-GPOS-00027
Associated with: CCI-000162 CCI-000163 CCI-000164
Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. The System event log may be susceptible to tampering if proper permissions are not applied.
Navigate to the System event log file. The default location is the "%SystemRoot%\System32\winevt\Logs" folder. However, the logs may have been moved to another folder. If the permissions for the "System.evtx" file are not as restrictive as the default permissions listed below, this is a finding. Eventlog - Full Control SYSTEM - Full Control Administrators - Full Control
Configure the permissions on the System event log file (System.evtx) to prevent access by non-privileged accounts. The default permissions listed below satisfy this requirement: Eventlog - Full Control SYSTEM - Full Control Administrators - Full Control The default location is the "%SystemRoot%\ System32\winevt\Logs" folder. If the location of the logs has been changed, when adding Eventlog to the permissions, it must be entered as "NT Service\Eventlog".
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