Rule Library

Sigma Rules

Browse detections by severity and log source, with YAML and sample events one click away.

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3,164Detection
474Emerging
141Hunting
1 rulesInspect a rule without leaving your results.
highexperimentalEmerging Threat

Grixba Malware Reconnaissance Activity

Detects execution of the Grixba reconnaissance tool based on suspicious command-line parameter combinations. This tool is used by the Play ransomware group for network enumeration, data gathering, and event log clearing.

windowsprocess_creation2 samples
2025-11-26