TLS Certificate Hostname Mismatch

Back


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

suppressionEnabled: false
description: |
    'TLS Certificate Hostname Mismatch'
kind: Scheduled
tactics:
- CredentialAccess
- DefenseEvasion
- Persistence
requiredDataConnectors:
- connectorId: HVPollingIDAzureFunctions
  dataTypes:
  - HackerViewLog_Azure_1_CL
incidentConfiguration:
  groupingConfiguration:
    reopenClosedIncident: false
    lookbackDuration: PT5H
    enabled: false
    matchingMethod: AllEntities
  createIncident: true
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CTM360/Analytic Rules/TLSCertificateHostnameMismatch.yaml
severity: Medium
name: TLS Certificate Hostname Mismatch
suppressionDuration: 5h
triggerThreshold: 0
queryPeriod: 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
id: 69761091-1a9a-49a9-8966-be68cd550766
queryFrequency: 5m
status: Available
version: 1.0.3
triggerOperator: gt
eventGroupingSettings:
  aggregationKind: SingleAlert
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

ARM