This detection rule identifies the installation of a DNS Server Level Plugin DLL, which can potentially allow code execution within the context of the DNS server. The rule monitors changes in the Windows Registry specifically targeting the 'ServerLevelPluginDll' parameter under the DNS server settings. When a malicious or unauthorized DLL is installed at this registry path, it may signal an attempt to compromise the DNS server's integrity and security. The detection rule requires a restart of the DNS service to take effect after installation. The rule is intended for high-severity alerts due to the potential risks associated with such plugin DLLs.