Vectra AI Detect - New Campaign Detected

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Id	a34d0338-eda0-42b5-8b93-32aae0d7a501
Rulename	Vectra AI Detect - New Campaign Detected
Description	Identifies when a new Campaign has been detected. This occurs when multiple Detections accross different Hosts are suspected to be part of the same Attack Campaign.
Severity	Medium
Tactics	LateralMovement CommandAndControl
Techniques	T1021 T1071
Required data connectors	CefAma
Kind	Scheduled
Query frequency	5m
Query period	5m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vectra AI Detect/Analytic Rules/VectraDetect-NewCampaign.yaml
Version	1.2.3
Arm template	a34d0338-eda0-42b5-8b93-32aae0d7a501.json

KQL

CommonSecurityLog
| where DeviceVendor == "Vectra Networks"
| where DeviceProduct == "X Series"
| where DeviceEventClassID contains "campaign"
| where DeviceAction == "START"
| extend reason = coalesce(
                          column_ifexists("Reason", ""), 
                          extract("reason=(.+?)($|;)", 1, AdditionalExtensions),
                          ""
                      )
| project-rename vectra_URL = DeviceCustomString4
| sort by TimeGenerated

YAML

id: a34d0338-eda0-42b5-8b93-32aae0d7a501
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vectra AI Detect/Analytic Rules/VectraDetect-NewCampaign.yaml
entityMappings:
- fieldMappings:
  - identifier: DomainName
    columnName: Activity
  entityType: DNS
requiredDataConnectors:
- dataTypes:
  - CommonSecurityLog
  connectorId: CefAma
queryFrequency: 5m
alertDetailsOverride:
  alertDynamicProperties:
  - alertProperty: AlertLink
    value: vectra_URL
  - alertProperty: ProductName
    value: DeviceProduct
  - alertProperty: ProviderName
    value: DeviceVendor
  alertDisplayNameFormat: Vectra AI - New Campaign Detected
  alertDescriptionFormat: |
        A new campaign named {{Activity}} has been detected (reason is {{reason}})
queryPeriod: 5m
status: Available
incidentConfiguration:
  groupingConfiguration:
    enabled: true
    reopenClosedIncident: true
    matchingMethod: AllEntities
    lookbackDuration: 7d
  createIncident: true
query: |
  CommonSecurityLog
  | where DeviceVendor == "Vectra Networks"
  | where DeviceProduct == "X Series"
  | where DeviceEventClassID contains "campaign"
  | where DeviceAction == "START"
  | extend reason = coalesce(
                            column_ifexists("Reason", ""), 
                            extract("reason=(.+?)($|;)", 1, AdditionalExtensions),
                            ""
                        )
  | project-rename vectra_URL = DeviceCustomString4
  | sort by TimeGenerated  
name: Vectra AI Detect - New Campaign Detected
kind: Scheduled
tactics:
- LateralMovement
- CommandAndControl
severity: Medium
relevantTechniques:
- T1021
- T1071
triggerThreshold: 0
version: 1.2.3
description: |
    'Identifies when a new Campaign has been detected.  This occurs when multiple Detections accross different Hosts are suspected to be part of the same Attack Campaign.'
customDetails:
  CampaignReason: reason
  CampaignSourceHost: SourceHostName
  CampaignName: Activity

ARM