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

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

ARM