Rule Library

Sigma Rules

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

3,782Total
3,164Detection
474Emerging
141Hunting
13 rulesInspect a rule without leaving your results.
highexperimentalEmerging Threat

Shai-Hulud Malicious GitHub Workflow Creation

Detects creation of shai-hulud-workflow.yml file associated with Shai Hulud worm targeting NPM supply chain attack that exfiltrates GitHub secrets

linuxfile_event
2026-01-24
highexperimentalEmerging Threat

Shai-Hulud Malware Indicators - Linux

Detects potential Shai-Hulud malware indicators based on specific command line arguments associated with its execution.

linuxprocess_creation
2025-11-25
highexperimentalEmerging Threat

Shai-Hulud Malicious Bun Execution - Linux

Detects the execution of `bun_environment.js` via the Bun runtime, a behavior associated with the Shai-Hulud "Second Coming" NPM supply chain attack. The malware uses a `setup_bun.js` script to install the Bun runtime if not present, and then executes the malicious `bun_environment.js` payload.

linuxprocess_creation
2025-11-25