## Hunt: Tuning - Guidelines These guidelines serve as a reminder set of considerations when tuning an existing Hunt. ### Documentation and Context - [ ] Detailed description of the suggested changes. - [ ] Provide example JSON data or screenshots. - [ ] Evidence of reducing benign events mistakenly identified as threats (False Positives). - [ ] Evidence of enhancing detection of true threats that were previously missed (False Negatives). - [ ] Evidence of optimizing resource consumption and execution time of detection rules (Performance). - [ ] Evidence of specific environment factors influencing customized hunt tuning (Contextual Tuning). - [ ] Evidence of improvements by modifying sensitivity (Threshold Adjustments). - [ ] Evidence of refining hunts to better detect deviations from typical behavior (Behavioral Tuning). - [ ] Evidence of improvements based on time-based patterns (Temporal Tuning). - [ ] Reasoning for adjusting priority or severity levels of alerts (Severity Tuning). - [ ] Evidence of improving the quality integrity of data used by hunts (Data Quality). - [ ] Ensure necessary updates to release documentation and versioning. - [ ] Field Usage: Ensure standardized fields for compatibility across different data environments and sources. ### Hunt Metadata Checks - [ ] `author`: The name of the individual or organization authoring the rule. - [ ] `updated_date` matches the date of tuning PR merged. - [ ] `min_stack_version` supports the widest stack versions. - [ ] `name` and `description` are descriptive and typo-free. - [ ] `language`: The query language(s) used in the rule, such as `KQL`, `EQL`, `ES|QL`, `OsQuery`, or `YARA`. - [ ] `query` is inclusive, not overly exclusive. Review to ensure the original intent of the hunt is maintained. - [ ] `integration` aligns with the `index`. Ensure updates if the integration is newly introduced. - [ ] `setup` includes necessary steps to configure the integration. - [ ] `note` includes additional information (e.g., Triage and analysis investigation guides, timeline templates). - [ ] `tags` are relevant to the threat and align with `EXPECTED_HUNT_TAGS` in `definitions.py`. - [ ] `threat`, `techniques`, and `subtechniques` map to ATT&CK whenever possible. ### Testing and Validation - [ ] Generate Markdown: Run `python generate_markdown.py` to update the documentation. - [ ] Validate the tuned hunt's performance and ensure it does not negatively impact the stack. - [ ] Ensure the tuned hunt has a low false positive rate.