Critical Severity Incident

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Id	4f1c9e6e-8b6b-4d2a-9f3e-123456789abc
Rulename	Critical Severity Incident
Description	Triggers an incident for every Morphisec alert whose attacks severity is critical.
Severity	High
Tactics	Execution DefenseEvasion
Techniques	T1059 T1204
Required data connectors	MorphisecCCF
Kind	Scheduled
Query frequency	10m
Query period	10m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Morphisec/Analytic Rules/MorphisecCriticalSeverityIncident.yaml
Version	1.0.0
Arm template	4f1c9e6e-8b6b-4d2a-9f3e-123456789abc.json

KQL

MorphisecAlerts_CL
| where threatMessageArrivalTime >= ago(10m)
| where attackSeverity == "CRITICAL"
| summarize arg_max(threatMessageArrivalTime, *) by id

YAML

eventGroupingSettings:
  aggregationKind: SingleAlert
suppressionEnabled: false
kind: Scheduled
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Morphisec/Analytic Rules/MorphisecCriticalSeverityIncident.yaml
triggerThreshold: 0
status: Available
relevantTechniques:
- T1059
- T1204
queryPeriod: 10m
name: Critical Severity Incident
entityMappings:
- entityType: Host
  fieldMappings:
  - columnName: hostname
    identifier: HostName
- entityType: Process
  fieldMappings:
  - columnName: processCommandLine
    identifier: CommandLine
alertDetailsOverride:
  alertDisplayNameFormat: 'Critical alert detected: {{threatSubType}}'
suppressionDuration: 5h
queryFrequency: 10m
triggerOperator: gt
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    matchingMethod: AllEntities
    lookbackDuration: 5h
    enabled: false
    reopenClosedIncident: false
requiredDataConnectors:
- connectorId: MorphisecCCF
  dataTypes:
  - Morphisec
description: |
    'Triggers an incident for every Morphisec alert whose attacks severity is critical.'
tactics:
- Execution
- DefenseEvasion
severity: High
version: 1.0.0
query: |
  MorphisecAlerts_CL
  | where threatMessageArrivalTime >= ago(10m)
  | where attackSeverity == "CRITICAL"
  | summarize arg_max(threatMessageArrivalTime, *) by id  
id: 4f1c9e6e-8b6b-4d2a-9f3e-123456789abc

ARM