Vaikora - High severity AI agent action detected

Vaikora_AgentSignals_CL
| where TimeGenerated > ago(1h)
| where severity_s in ("high", "critical")
| summarize
    ActionCount = count(),
    MaxAnomalyScore = max(anomaly_score_d),
    Actions = make_set(action_type_s),
    PolicyDecisions = make_set(policy_decision_s),
    ResourceTypes = make_set(resource_type_s),
    LogHashes = make_set(log_hash_s)
  by AgentId = agent_id_s, Severity = severity_s
| extend
    ActionList = strcat_array(Actions, ", "),
    PolicyList = strcat_array(PolicyDecisions, ", "),
    ResourceList = strcat_array(ResourceTypes, ", ")

suppressionDuration: 1h
name: Vaikora - High severity AI agent action detected
suppressionEnabled: false
triggerOperator: GreaterThan
query: |
  Vaikora_AgentSignals_CL
  | where TimeGenerated > ago(1h)
  | where severity_s in ("high", "critical")
  | summarize
      ActionCount = count(),
      MaxAnomalyScore = max(anomaly_score_d),
      Actions = make_set(action_type_s),
      PolicyDecisions = make_set(policy_decision_s),
      ResourceTypes = make_set(resource_type_s),
      LogHashes = make_set(log_hash_s)
    by AgentId = agent_id_s, Severity = severity_s
  | extend
      ActionList = strcat_array(Actions, ", "),
      PolicyList = strcat_array(PolicyDecisions, ", "),
      ResourceList = strcat_array(ResourceTypes, ", ")
queryFrequency: 1h
description: |
  Identifies AI agent actions from Vaikora classified as high or critical severity. These events may indicate an agent operating outside safe parameters or triggering policy thresholds.
id: 15c49777-7cb7-4746-8064-6fa4c7a73df8
triggerThreshold: 0
queryPeriod: 1h
version: 1.0.0
kind: Scheduled
customDetails:
  MaxAnomalyScore: MaxAnomalyScore
  ResourceTypes: ResourceList
  Actions: ActionList
  ActionCount: ActionCount
  PolicyDecisions: PolicyList
status: Available
eventGroupingSettings:
  aggregationKind: AlertPerResult
severity: High
requiredDataConnectors:
- connectorId: VaikoraSentinel
  dataTypes:
  - Vaikora_AgentSignals_CL
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vaikora-Sentinel/Analytic%20Rules/Vaikora%20-%20High%20Risk%20AI%20Agent%20Action.yaml
incidentConfiguration:
  groupingConfiguration:
    lookbackDuration: 1h
    enabled: true
    reopenClosedIncident: false
    matchingMethod: Selected
    groupByEntities:
    - Account
  createIncident: true
relevantTechniques:
- T1059
- T1078
- T1548
tactics:
- Impact
- Execution
- PrivilegeEscalation
entityMappings:
- fieldMappings:
  - identifier: Name
    columnName: AgentId
  entityType: Account

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2024-01-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/15c49777-7cb7-4746-8064-6fa4c7a73df8')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/15c49777-7cb7-4746-8064-6fa4c7a73df8')]",
      "properties": {
        "alertRuleTemplateName": "15c49777-7cb7-4746-8064-6fa4c7a73df8",
        "customDetails": {
          "ActionCount": "ActionCount",
          "Actions": "ActionList",
          "MaxAnomalyScore": "MaxAnomalyScore",
          "PolicyDecisions": "PolicyList",
          "ResourceTypes": "ResourceList"
        },
        "description": "Identifies AI agent actions from Vaikora classified as high or critical severity. These events may indicate an agent operating outside safe parameters or triggering policy thresholds.\n",
        "displayName": "Vaikora - High severity AI agent action detected",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AgentId",
                "identifier": "Name"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": true,
            "groupByEntities": [
              "Account"
            ],
            "lookbackDuration": "PT1H",
            "matchingMethod": "Selected",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vaikora-Sentinel/Analytic%20Rules/Vaikora%20-%20High%20Risk%20AI%20Agent%20Action.yaml",
        "query": "Vaikora_AgentSignals_CL\n| where TimeGenerated > ago(1h)\n| where severity_s in (\"high\", \"critical\")\n| summarize\n    ActionCount = count(),\n    MaxAnomalyScore = max(anomaly_score_d),\n    Actions = make_set(action_type_s),\n    PolicyDecisions = make_set(policy_decision_s),\n    ResourceTypes = make_set(resource_type_s),\n    LogHashes = make_set(log_hash_s)\n  by AgentId = agent_id_s, Severity = severity_s\n| extend\n    ActionList = strcat_array(Actions, \", \"),\n    PolicyList = strcat_array(PolicyDecisions, \", \"),\n    ResourceList = strcat_array(ResourceTypes, \", \")\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Execution",
          "Impact",
          "PrivilegeEscalation"
        ],
        "techniques": [
          "T1059",
          "T1078",
          "T1548"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}