Illumio VEN Offline Detection Rule

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Id	ec07fcd3-724f-426d-9f53-041801ca5f6c
Rulename	Illumio VEN Offline Detection Rule
Description	Create Microsoft Sentinel Incident When Ven Goes Into Offline state
Severity	High
Tactics	DefenseEvasion
Techniques	T1562
Required data connectors	IllumioSaaSDataConnector SyslogAma
Kind	Scheduled
Query frequency	60m
Query period	60m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/IllumioSaaS/Analytic Rules/Illumio_VEN_Offline_Detection_Query.yaml
Version	1.0.7
Arm template	ec07fcd3-724f-426d-9f53-041801ca5f6c.json

KQL

Illumio_Auditable_Events_CL
| union IllumioSyslogAuditEvents    
| where event_type has 'agent_offline_check'
| mv-expand resource_changes
| extend hostname = resource_changes['resource']['workload']['hostname'],
    workload_href = resource_changes['resource']['workload']['href'],
    workload_labels = resource_changes['resource']['workload']['labels']
| project-away resource_changes, version, notifications, action, severity, status // action field will have filtered ip addr, so no point of using IP entity

YAML

triggerOperator: gt
queryFrequency: 60m
requiredDataConnectors:
- connectorId: IllumioSaaSDataConnector
  dataTypes:
  - Illumio_Auditable_Events_CL
- connectorId: SyslogAma
  datatypes:
  - Syslog
relevantTechniques:
- T1562
entityMappings:
- entityType: Host
  fieldMappings:
  - identifier: HostName
    columnName: hostname
query: |
  Illumio_Auditable_Events_CL
  | union IllumioSyslogAuditEvents    
  | where event_type has 'agent_offline_check'
  | mv-expand resource_changes
  | extend hostname = resource_changes['resource']['workload']['hostname'],
      workload_href = resource_changes['resource']['workload']['href'],
      workload_labels = resource_changes['resource']['workload']['labels']
  | project-away resource_changes, version, notifications, action, severity, status // action field will have filtered ip addr, so no point of using IP entity  
triggerThreshold: 0
alertDetailsOverride:
  alertDisplayNameFormat: |
        Illumio VEN Offline Incident for {{hostname}}
  alertDescriptionFormat: |
        Illumio VEN Offline Incident for {{hostname}} generated at {{TimeGenerated}}
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/IllumioSaaS/Analytic Rules/Illumio_VEN_Offline_Detection_Query.yaml
queryPeriod: 60m
name: Illumio VEN Offline Detection Rule
status: Available
kind: Scheduled
description: |
    'Create Microsoft Sentinel Incident When Ven Goes Into Offline state'
id: ec07fcd3-724f-426d-9f53-041801ca5f6c
version: 1.0.7
eventGroupingSettings:
  aggregationKind: SingleAlert
tactics:
- DefenseEvasion
severity: High

ARM