This detection rule identifies the addition of printer drivers in Windows environments by monitoring specific operational logs from the Windows PrintService. It particularly focuses on EventCode 316, which logs events related to the management of printer drivers. The rule is designed to flag activities involving critical DLLs, such as 'kernelbase.dll' and 'UNIDRV.DLL'. These actions may signal exploitation attempts, particularly in relation to the PrintNightmare vulnerability (CVE-2021-34527), which could allow attackers to execute arbitrary code or escalate privileges on affected systems. This detection aims to enhance endpoint security by providing real-time alerts and necessitating immediate investigation when suspicious activity is detected.