Vectra Create Detection Alert for Accounts

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Id	e796701f-6b39-4c54-bf8a-1d543a990784
Rulename	Vectra Create Detection Alert for Accounts
Description	This analytic rule is looking for new attacker behaviors observed by the Vectra Platform. The intent is to create entries in the SecurityAlert table for every new detection attached to an entity monitored by the Vectra Platform
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/Detection_Account.yaml
Version	1.0.1
Arm template	e796701f-6b39-4c54-bf8a-1d543a990784.json

KQL

VectraDetections
| where Type == "account"
| extend
    entity_uid = ['Entity UID'],
    entity_id = ['Entity ID'],
    entity_type = ['Entity Type'],
    detection_id = ['Detection ID'],
    detection = ['Detection Name'],
    category = ['Detection Category'],
    detection_url = ['Vectra Pivot'],
    mitre = Mitre,
    tags = Tags
| summarize arg_max(TimeGenerated, *) by ['Detection ID'], entity_uid

YAML

suppressionEnabled: false
relevantTechniques:
- T1546
entityMappings:
- fieldMappings:
  - columnName: entity_uid
    identifier: Name
  entityType: Account
incidentConfiguration:
  groupingConfiguration:
    reopenClosedIncident: false
    matchingMethod: AllEntities
    enabled: false
    lookbackDuration: PT5H
  createIncident: false
version: 1.0.1
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vectra XDR/Analytic Rules/Detection_Account.yaml
suppressionDuration: PT1H
description: This analytic rule is looking for new attacker behaviors observed by the Vectra Platform. The intent is to create entries in the SecurityAlert table for every new detection attached to an entity monitored by the Vectra Platform
tactics:
- Persistence
customDetails:
  mitre_techniques: mitre
  entity_type: entity_type
  entity_id: entity_id
  detection_id: detection_id
  tags: tags
requiredDataConnectors:
- connectorId: VectraXDR
  dataTypes:
  - Detections_Data_CL
triggerOperator: GreaterThan
alertDetailsOverride:
  alertDynamicProperties:
  - alertProperty: AlertLink
    value: detection_url
  alertDisplayNameFormat: Vectra AI Detection-  {{detection}}
  alertDescriptionFormat: Vectra AI has detected {{category}} - {{detection} on entity {{entity_uid}}.
eventGroupingSettings:
  aggregationKind: AlertPerResult
id: e796701f-6b39-4c54-bf8a-1d543a990784
queryFrequency: 10m
query: |
  VectraDetections
  | where Type == "account"
  | extend
      entity_uid = ['Entity UID'],
      entity_id = ['Entity ID'],
      entity_type = ['Entity Type'],
      detection_id = ['Detection ID'],
      detection = ['Detection Name'],
      category = ['Detection Category'],
      detection_url = ['Vectra Pivot'],
      mitre = Mitre,
      tags = Tags
  | summarize arg_max(TimeGenerated, *) by ['Detection ID'], entity_uid  
severity: Medium
status: Available
queryPeriod: 10m
name: Vectra Create Detection Alert for Accounts
triggerThreshold: 0
kind: Scheduled

ARM