Vectra Create Detection Alert for Accounts

Back


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

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

ARM