Vectra Create Detection Alert for Hosts

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Id	fb861539-da19-4266-831f-99459b8e7605
Rulename	Vectra Create Detection Alert for Hosts
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_Host.yaml
Version	1.0.1
Arm template	fb861539-da19-4266-831f-99459b8e7605.json

KQL

VectraDetections
| where Type == "host"
| 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

eventGroupingSettings:
  aggregationKind: AlertPerResult
triggerThreshold: 0
entityMappings:
- entityType: Host
  fieldMappings:
  - identifier: HostName
    columnName: entity_uid
requiredDataConnectors:
- dataTypes:
  - Detections_Data_CL
  connectorId: VectraXDR
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vectra XDR/Analytic Rules/Detection_Host.yaml
suppressionEnabled: false
incidentConfiguration:
  createIncident: false
  groupingConfiguration:
    enabled: false
    reopenClosedIncident: false
    matchingMethod: AllEntities
    lookbackDuration: PT5H
name: Vectra Create Detection Alert for Hosts
alertDetailsOverride:
  alertDisplayNameFormat: Vectra AI Detection- {{detection}}
  alertDynamicProperties:
  - value: detection_url
    alertProperty: AlertLink
  alertDescriptionFormat: Vectra AI has detected {{category}} - {{detection}} on entity {{entity_uid}}.
relevantTechniques:
- T1546
status: Available
version: 1.0.1
queryPeriod: 10m
customDetails:
  entity_type: entity_type
  mitre_techniques: mitre
  detection_id: detection_id
  tags: tags
  entity_id: entity_id
kind: Scheduled
id: fb861539-da19-4266-831f-99459b8e7605
query: |
  VectraDetections
  | where Type == "host"
  | 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  
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
suppressionDuration: PT1H
triggerOperator: GreaterThan
tactics:
- Persistence
severity: Medium

ARM