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feat: SnortML GID411 and signature+EVE dual-signal CSF detections - #4221

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feat: SnortML GID411 and signature+EVE dual-signal CSF detections#4221
AAH20 wants to merge 2 commits into
splunk:developfrom
AAH20:feat/dual-signal-snortml-eve-triage

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@AAH20

@AAH20 AAH20 commented Aug 16, 2026

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Fixes #4220

Details

Adds two experimental Cisco Secure Firewall Threat Defense analytics:

  1. SnortML High Confidence ML-Only (GeneratorID=411) — Anomaly / intermediate finding. Encodes ML ≠ signature TP; escalate/corroborate, do not auto-contain.
  2. Signature Plus EVE Corroboration — classic Snort (GeneratorID!=411) joined with high EVE threat confidence — TTP / higher finding score.

Companion attack_data: splunk/attack_data#1206

Test URLs currently point at the fork branch until attack_data merges; can retarget to splunk/attack_data media URLs after merge.

Checklist

  • Validate name matches <platform>_<mitre att&ck technique>_<short description> nomenclature
  • CI/CD jobs passed
  • Validated SPL logic
  • Validated tags, description, and how to implement
  • Verified references match analytic
  • Confirm updates to lookups are handled properly (N/A)

Notes

Add experimental analytics that separate ML-only SnortML (GeneratorID 411)
from classic signature+EVE corroboration so ESCU does not equate ML to signature TP.

Co-authored-by: Cursor <cursoragent@cursor.com>
@AAH20

AAH20 commented Aug 16, 2026

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CLA: signed. Happy to adjust naming / finding scores / attack_data URL retarget after #1206 merges.

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feat: Dual-signal SnortML (GID 411) + signature/EVE corroboration analytics for Cisco Secure Firewall

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