API - Invalid host access

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Id	28500be7-cfcf-40e1-bad4-bc524e9283e2
Rulename	API - Invalid host access
Description	42Crunch API protection against invalid host access
Severity	Low
Tactics	Reconnaissance
Techniques	T1592
Required data connectors	42CrunchAPIProtection FortyTwoCrunchAPIProtection
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/42Crunch API Protection/Analytic Rules/APIInvalidHostAccess.yaml
Version	3.0.1
Arm template	28500be7-cfcf-40e1-bad4-bc524e9283e2.json

KQL

FortyTwoCrunchAPIProtection
| where TimeGenerated >= ago(5m) 
| where ErrorMessage has "hostpath_mapping" 
| project-away NonBlockingMode, SourcePort, DestinationPort, Query, ApiId, ResponseHeader, RequestHeader, Errors, EventType, Uuid 
| sort by TimeGenerated desc

YAML

status: Available
queryFrequency: 5m
queryPeriod: 5m
triggerOperator: gt
query: |
  FortyTwoCrunchAPIProtection
  | where TimeGenerated >= ago(5m) 
  | where ErrorMessage has "hostpath_mapping" 
  | project-away NonBlockingMode, SourcePort, DestinationPort, Query, ApiId, ResponseHeader, RequestHeader, Errors, EventType, Uuid 
  | sort by TimeGenerated desc   
eventGroupingSettings:
  aggregationKind: SingleAlert
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/42Crunch API Protection/Analytic Rules/APIInvalidHostAccess.yaml
tactics:
- Reconnaissance
triggerThreshold: 0
entityMappings:
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: SourceIp
- entityType: Host
  fieldMappings:
  - identifier: HostName
    columnName: Hostname
- entityType: Account
  fieldMappings:
  - identifier: FullName
    columnName: InstanceName
requiredDataConnectors:
- connectorId: 42CrunchAPIProtection
  dataTypes:
  - FortyTwoCrunchAPIProtection
- connectorId: FortyTwoCrunchAPIProtection
  dataTypes:
  - FortyTwoCrunchAPIProtection
kind: Scheduled
relevantTechniques:
- T1592
customDetails: 
description: |
    '42Crunch API protection against invalid host access'
name: API - Invalid host access
version: 3.0.1
id: 28500be7-cfcf-40e1-bad4-bc524e9283e2
severity: Low

ARM