Vectra Create Incident Based on Priority for Hosts
Id | 9b51b0fb-0419-4450-9ea0-0a48751c4902 |
Rulename | Vectra Create Incident Based on Priority for Hosts |
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. |
Severity | Medium |
Tactics | Persistence |
Techniques | T1546 |
Required data connectors | VectraXDR |
Kind | Scheduled |
Query frequency | 10m |
Query period | 10m |
Trigger threshold | 0 |
Trigger operator | GreaterThan |
Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vectra XDR/Analytic Rules/Priority_Host.yaml |
Version | 1.0.1 |
Arm template | 9b51b0fb-0419-4450-9ea0-0a48751c4902.json |
Entities_Data_CL
| where type_s == "host" and is_prioritized_b == true
| summarize arg_max(['last_modified_timestamp_t'], *) by ['name_s']
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.
queryFrequency: 10m
eventGroupingSettings:
aggregationKind: AlertPerResult
entityMappings:
- fieldMappings:
- identifier: HostName
columnName: name_s
entityType: Host
customDetails:
entity_importance: entity_importance_d
attack_profile: attack_profile_s
entity_id: id_d
ip_address: ip_s
entity_type: type_s
tags: tags_s
queryPeriod: 10m
query: |
Entities_Data_CL
| where type_s == "host" and is_prioritized_b == true
| summarize arg_max(['last_modified_timestamp_t'], *) by ['name_s']
suppressionEnabled: false
alertDetailsOverride:
alertDisplayNameFormat: Vectra AI Incident- {{name_s}}
alertDynamicProperties:
- alertProperty: AlertLink
value: url_s
alertDescriptionFormat: An incident has been generated for Vectra AI entity {{name_s}} that is presenting an urgency score of {{urgency_score_d}}.
incidentConfiguration:
groupingConfiguration:
matchingMethod: AllEntities
lookbackDuration: P7D
reopenClosedIncident: true
enabled: true
createIncident: true
status: Available
id: 9b51b0fb-0419-4450-9ea0-0a48751c4902
name: Vectra Create Incident Based on Priority for Hosts
kind: Scheduled
version: 1.0.1
requiredDataConnectors:
- connectorId: VectraXDR
dataTypes:
- Entities_Data_CL
severity: Medium
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vectra XDR/Analytic Rules/Priority_Host.yaml
triggerThreshold: 0
triggerOperator: GreaterThan
tactics:
- Persistence
relevantTechniques:
- T1546
suppressionDuration: PT1H
{
"$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/9b51b0fb-0419-4450-9ea0-0a48751c4902')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/9b51b0fb-0419-4450-9ea0-0a48751c4902')]",
"properties": {
"alertDetailsOverride": {
"alertDescriptionFormat": "An incident has been generated for Vectra AI entity {{name_s}} that is presenting an urgency score of {{urgency_score_d}}.",
"alertDisplayNameFormat": "Vectra AI Incident- {{name_s}}",
"alertDynamicProperties": [
{
"alertProperty": "AlertLink",
"value": "url_s"
}
]
},
"alertRuleTemplateName": "9b51b0fb-0419-4450-9ea0-0a48751c4902",
"customDetails": {
"attack_profile": "attack_profile_s",
"entity_id": "id_d",
"entity_importance": "entity_importance_d",
"entity_type": "type_s",
"ip_address": "ip_s",
"tags": "tags_s"
},
"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 Create Incident Based on Priority for Hosts",
"enabled": true,
"entityMappings": [
{
"entityType": "Host",
"fieldMappings": [
{
"columnName": "name_s",
"identifier": "HostName"
}
]
}
],
"eventGroupingSettings": {
"aggregationKind": "AlertPerResult"
},
"incidentConfiguration": {
"createIncident": true,
"groupingConfiguration": {
"enabled": true,
"lookbackDuration": "P7D",
"matchingMethod": "AllEntities",
"reopenClosedIncident": true
}
},
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vectra XDR/Analytic Rules/Priority_Host.yaml",
"query": "Entities_Data_CL\n| where type_s == \"host\" and is_prioritized_b == true\n| summarize arg_max(['last_modified_timestamp_t'], *) by ['name_s']\n",
"queryFrequency": "PT10M",
"queryPeriod": "PT10M",
"severity": "Medium",
"status": "Available",
"subTechniques": [],
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Persistence"
],
"techniques": [
"T1546"
],
"templateVersion": "1.0.1",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}