Elastic medium stable eql

Suricata and Elastic Defend Network Correlation

This detection correlates Suricata alerts with Elastic Defend network events to identify the source process performing the network activity.

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Detection Logic

sequence by source.port, source.ip, destination.ip with maxspan=5s
 [network where data_stream.dataset == "suricata.eve" and event.kind == "alert" and
  event.severity != 3 and source.ip != null and destination.ip != null and
  not source.domain : ("*nessusscan*", "SCCMPS*") and
  not rule.name in ("ET INFO SMB2 NT Create AndX Request For a Powershell .ps1 File", "ET SCAN MS Terminal Server Traffic on Non-standard Port")]
 [network where event.module == "endpoint" and event.action in ("disconnect_received", "connection_attempted") and
  not process.executable in ("System", "C:\\Program Files (x86)\\Admin Arsenal\\PDQ Inventory\\PDQInventoryService.exe") and 
  not process.executable : "C:\\Windows\\AdminArsenal\\PDQInventory-Scanner\\service-*\\exec\\PDQInventoryScanner.exe"]

Field Validations

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