The detection rule identifies suspicious PowerShell activities by utilizing PowerShell Script Block Logging (specifically EventCode=4104). This mechanism captures complete command executions within PowerShell, enabling the identification of various offensive toolkits and commands that are indicative of malicious behavior, such as credential theft, lateral movement, and persistence techniques. The detection works by matching logged ScriptBlockText against a repository of known malicious PowerShell strings. If matched, this indicates potential unauthorized access, privilege escalation, or compromise of sensitive data, warranting further investigation. Users should ensure that the relevant operational logs are collected and that the macro for PowerShell is appropriately configured to ensure accurate detection.