diff --git a/salt/soc/files/soc/hunt.eventfields.json b/salt/soc/files/soc/hunt.eventfields.json
index 8c3fd0ccb..730bf51b5 100644
--- a/salt/soc/files/soc/hunt.eventfields.json
+++ b/salt/soc/files/soc/hunt.eventfields.json
@@ -72,6 +72,7 @@
 	  "::enip": ["soc_timestamp", "source.ip", "source.port", "destination.ip", "destination.port", "enip.command", "enip.status_code", "log.id.uid", "event.dataset" ],
 	  "::modbus_detailed": ["soc_timestamp", "source.ip", "source.port", "destination.ip", "destination.port", "modbus.function", "log.id.uid" ],
 	  "::opcua_binary": ["soc_timestamp", "source.ip", "source.port", "destination.ip", "destination.port", "opcua.identifier_string", "opcua.message_type", "log.id.uid" ],
+	  "::opcua_binary_activate_session": ["soc_timestamp", "source.ip", "source.port", "destination.ip", "destination.port", "opcua.identifier_string", "opcua.user_name", "log.id.uid" ],
 	  "::opcua_binary_browse": ["soc_timestamp", "source.ip", "source.port", "destination.ip", "destination.port", "opcua.link_id", "opcua.service_type", "log.id.uid" ],
 	  "::opcua_binary_browse_description": ["soc_timestamp", "source.ip", "source.port", "destination.ip", "destination.port", "log.id.uid" ],
 	  "::opcua_binary_browse_response_references": ["soc_timestamp", "source.ip", "source.port", "destination.ip", "destination.port", "opcua.node_class", "opcua.display_name_text", "log.id.uid" ],