The 'Remote File Copy' detection rule is designed to identify the use of file transfer tools that facilitate copying files to or from remote systems within a Linux environment. These tools include SCP (Secure Copy Protocol), RSYNC (a utility for efficiently transferring and synchronizing files), and SFTP (SSH File Transfer Protocol). The detection mechanism utilizes specific filters characterized by the presence of '@' and ':' in command strings, which are common in remote file copying operations, enabling the identification of potentially malicious usage of these tools. The condition for triggering an alert is satisfied when both the tools and the filters are present in the logs. This rule is particularly relevant in scenarios where unauthorized lateral movement or command-and-control activities are suspected, leveraging the MITRE ATT&CK technique T1105. It's important to note that legitimate administrative activities may generate false positives, necessitating additional context to validate the detections.