TLS Certificate Hostname Mismatch

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Id	69761091-1a9a-49a9-8966-be68cd550766
Rulename	TLS Certificate Hostname Mismatch
Description	TLS Certificate Hostname Mismatch
Severity	Medium
Tactics	CredentialAccess DefenseEvasion Persistence
Techniques	T1556
Required data connectors	HVPollingIDAzureFunctions
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/CTM360/Analytic Rules/TLSCertificateHostnameMismatch.yaml
Version	1.0.3
Arm template	69761091-1a9a-49a9-8966-be68cd550766.json

KQL

HackerViewLog_Azure_1_CL | where severity_s == "medium" | where progress_status_s == "New" | where status_s != "inactive"  | where issue_name_s == "TLS Certificate Hostname Mismatch"

YAML

OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CTM360/Analytic Rules/TLSCertificateHostnameMismatch.yaml
kind: Scheduled
suppressionDuration: 5h
queryFrequency: 5m
query: 'HackerViewLog_Azure_1_CL | where severity_s == "medium" | where progress_status_s == "New" | where status_s != "inactive"  | where issue_name_s == "TLS Certificate Hostname Mismatch" '
relevantTechniques:
- T1556
name: TLS Certificate Hostname Mismatch
requiredDataConnectors:
- dataTypes:
  - HackerViewLog_Azure_1_CL
  connectorId: HVPollingIDAzureFunctions
eventGroupingSettings:
  aggregationKind: SingleAlert
description: |
    'TLS Certificate Hostname Mismatch'
triggerThreshold: 0
incidentConfiguration:
  groupingConfiguration:
    enabled: false
    matchingMethod: AllEntities
    reopenClosedIncident: false
    lookbackDuration: PT5H
  createIncident: true
queryPeriod: 5m
version: 1.0.3
suppressionEnabled: false
status: Available
triggerOperator: gt
entityMappings:
- entityType: IP
  fieldMappings:
  - columnName: meta_resolved_ip_s
    identifier: Address
- entityType: Host
  fieldMappings:
  - columnName: meta_host_s
    identifier: HostName
- entityType: URL
  fieldMappings:
  - columnName: hackerview_link_s
    identifier: Url
tactics:
- CredentialAccess
- DefenseEvasion
- Persistence
severity: Medium
id: 69761091-1a9a-49a9-8966-be68cd550766

ARM