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

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

ARM