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
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
kind: Scheduled
tactics:
- Persistence
requiredDataConnectors:
- connectorId: VectraXDR
  dataTypes:
  - Detections_Data_CL
incidentConfiguration:
  groupingConfiguration:
    reopenClosedIncident: false
    lookbackDuration: PT5H
    enabled: false
    matchingMethod: AllEntities
  createIncident: false
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vectra XDR/Analytic Rules/Detection_Account.yaml
severity: Medium
name: Vectra Create Detection Alert for Accounts
suppressionDuration: PT1H
customDetails:
  entity_id: entity_id
  entity_type: entity_type
  mitre_techniques: mitre
  detection_id: detection_id
  tags: tags
eventGroupingSettings:
  aggregationKind: AlertPerResult
triggerThreshold: 0
queryPeriod: 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  
relevantTechniques:
- T1546
alertDetailsOverride:
  alertDynamicProperties:
  - alertProperty: AlertLink
    value: detection_url
  alertDescriptionFormat: Vectra AI has detected {{category}} - {{detection} on entity {{entity_uid}}.
  alertDisplayNameFormat: Vectra AI Detection-  {{detection}}
id: e796701f-6b39-4c54-bf8a-1d543a990784
queryFrequency: 10m
status: Available
triggerOperator: GreaterThan
version: 1.0.1
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: entity_uid
    identifier: Name

ARM