Microsoft Sentinel Analytic Rules
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Vectra Priority Entities

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Id93de640a-314d-459a-9e21-00de2bffa92d
RulenameVectra Priority Entities
DescriptionCreate an incident when an identity is suspected to be compromised. Vectra is using AI to prioritize an entity based on multiple factors (attack rating, velocity, breadth, importance.etc.). This layer of aggregation at the entity level provides a greater signal-to-noise ratio and help analyst focus on what matters.
SeverityHigh
Required data connectorsVectraXDR
KindScheduled
Query frequency5m
Query period5m
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vectra XDR/Analytic Rules/DetectXDR_Prioritized_Entities.yaml
Version1.0.0
Arm template93de640a-314d-459a-9e21-00de2bffa92d.json
Deploy To Azure
VectraEntityScoring
| where ['Is Prioritized'] == true
// custom details do not allow spaces in the attribute name
| extend attack_rating = ['Attack Rating']
| extend breadth = ['Breadth Contrib']
| extend detections = ['Active Detection Types']
| extend urgency = ['Urgency Score']
| extend url = ['Vectra Pivot']
| summarize arg_max(['Last Updated'], *) by ['Entity ID']
incidentConfiguration:
  groupingConfiguration:
    groupByAlertDetails: []
    enabled: true
    lookbackDuration: 7d
    matchingMethod: AllEntities
    groupByCustomDetails: []
    reopenClosedIncident: true
    groupByEntities: []
  createIncident: true
suppressionDuration: 5h
queryPeriod: 5m
kind: Scheduled
requiredDataConnectors:
- dataTypes:
  - Entity_Scoring_Data_CL
  connectorId: VectraXDR
suppressionEnabled: false
eventGroupingSettings:
  aggregationKind: AlertPerResult
id: 93de640a-314d-459a-9e21-00de2bffa92d
triggerThreshold: 0
entityMappings:
- fieldMappings:
  - identifier: HostName
    columnName: Name
  entityType: Host
name: Vectra Priority Entities
status: Available
alertDetailsOverride:
  alertDisplayNameFormat: 'Priority Incident - {{Name}}  with Urgency Score of {{Urgency Score}}  '
  alertDescriptionFormat: |-
    Entity {{Name}} has been prioritized by the Vectra AI prioritization algorithm with an urgency score of {{Urgency Score}}.
    Attack rating is {{Attack Rating}}.    
  alertDynamicProperties:
  - value: urgency
    alertProperty: ConfidenceLevel
  - value: url
    alertProperty: AlertLink
customDetails:
  Velocity: Velocity
  detections: detections
  Attack_Rating: attack_rating
  Breadth: breadth
  Entity_importance: Importance
  Entity_type: Type
severity: High
queryFrequency: 5m
version: 1.0.0
description: Create an incident when an identity is suspected to be compromised. Vectra is using AI to prioritize an entity based on multiple factors (attack rating, velocity, breadth, importance.etc.). This layer of aggregation at the entity level provides a greater signal-to-noise ratio and help analyst focus on what matters.
query: |
  VectraEntityScoring
  | where ['Is Prioritized'] == true
  // custom details do not allow spaces in the attribute name
  | extend attack_rating = ['Attack Rating']
  | extend breadth = ['Breadth Contrib']
  | extend detections = ['Active Detection Types']
  | extend urgency = ['Urgency Score']
  | extend url = ['Vectra Pivot']
  | summarize arg_max(['Last Updated'], *) by ['Entity ID']  
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vectra XDR/Analytic Rules/DetectXDR_Prioritized_Entities.yaml
triggerOperator: gt
{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2023-02-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/93de640a-314d-459a-9e21-00de2bffa92d')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/93de640a-314d-459a-9e21-00de2bffa92d')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "Entity {{Name}} has been prioritized by the Vectra AI prioritization algorithm with an urgency score of {{Urgency Score}}.\nAttack rating is {{Attack Rating}}.",
          "alertDisplayNameFormat": "Priority Incident - {{Name}}  with Urgency Score of {{Urgency Score}}  ",
          "alertDynamicProperties": [
            {
              "alertProperty": "ConfidenceLevel",
              "value": "urgency"
            },
            {
              "alertProperty": "AlertLink",
              "value": "url"
            }
          ]
        },
        "alertRuleTemplateName": "93de640a-314d-459a-9e21-00de2bffa92d",
        "customDetails": {
          "Attack_Rating": "attack_rating",
          "Breadth": "breadth",
          "detections": "detections",
          "Entity_importance": "Importance",
          "Entity_type": "Type",
          "Velocity": "Velocity"
        },
        "description": "Create an incident when an identity is suspected to be compromised. Vectra is using AI to prioritize an entity based on multiple factors (attack rating, velocity, breadth, importance.etc.). This layer of aggregation at the entity level provides a greater signal-to-noise ratio and help analyst focus on what matters.",
        "displayName": "Vectra Priority Entities",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "Name",
                "identifier": "HostName"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": true,
            "groupByAlertDetails": [],
            "groupByCustomDetails": [],
            "groupByEntities": [],
            "lookbackDuration": "P7D",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": true
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vectra XDR/Analytic Rules/DetectXDR_Prioritized_Entities.yaml",
        "query": "VectraEntityScoring\n| where ['Is Prioritized'] == true\n// custom details do not allow spaces in the attribute name\n| extend attack_rating = ['Attack Rating']\n| extend breadth = ['Breadth Contrib']\n| extend detections = ['Active Detection Types']\n| extend urgency = ['Urgency Score']\n| extend url = ['Vectra Pivot']\n| summarize arg_max(['Last Updated'], *) by ['Entity ID']\n",
        "queryFrequency": "PT5M",
        "queryPeriod": "PT5M",
        "severity": "High",
        "status": "Available",
        "suppressionDuration": "PT5H",
        "suppressionEnabled": false,
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}