Microsoft Sentinel Analytic Rules
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TLS Certificate Using Weak Cipher - Informational

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Id1bdf3cba-6b85-4b88-ab1e-681bac20d41f
RulenameTLS Certificate Using Weak Cipher - Informational
DescriptionTLS Certificate Using Weak Cipher
SeverityInformational
TacticsCredentialAccess
LateralMovement
DefenseEvasion
Persistence
TechniquesT1556
T1210
T1212
Required data connectorsHVPollingIDAzureFunctions
KindScheduled
Query frequency5m
Query period5m
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CTM360/Analytic Rules/TLSCertificateUsingWeakCipherInformational.yaml
Version1.0.2
Arm template1bdf3cba-6b85-4b88-ab1e-681bac20d41f.json
Deploy To Azure
HackerViewLog_Azure_1_CL | where severity_s == "low" | where progress_status_s == "New" | where status_s != "inactive"  | where issue_name_s == "TLS Certificate Using Weak Cipher"
severity: Informational
id: 1bdf3cba-6b85-4b88-ab1e-681bac20d41f
suppressionDuration: 5h
suppressionEnabled: false
queryFrequency: 5m
queryPeriod: 5m
relevantTechniques:
- T1556
- T1210
- T1212
triggerOperator: gt
status: Available
tactics:
- CredentialAccess
- LateralMovement
- DefenseEvasion
- Persistence
kind: Scheduled
description: |
    'TLS Certificate Using Weak Cipher'
eventGroupingSettings:
  aggregationKind: SingleAlert
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CTM360/Analytic Rules/TLSCertificateUsingWeakCipherInformational.yaml
requiredDataConnectors:
- dataTypes:
  - HackerViewLog_Azure_1_CL
  connectorId: HVPollingIDAzureFunctions
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
query: HackerViewLog_Azure_1_CL | where severity_s == "low" | where progress_status_s == "New" | where status_s != "inactive"  | where issue_name_s == "TLS Certificate Using Weak Cipher"
version: 1.0.2
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    groupByCustomDetails: []
    reopenClosedIncident: false
    enabled: false
    lookbackDuration: PT5H
    groupByEntities: []
    matchingMethod: AllEntities
    groupByAlertDetails: []
name: TLS Certificate Using Weak Cipher - Informational
triggerThreshold: 0
{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2024-01-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/1bdf3cba-6b85-4b88-ab1e-681bac20d41f')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/1bdf3cba-6b85-4b88-ab1e-681bac20d41f')]",
      "properties": {
        "alertRuleTemplateName": "1bdf3cba-6b85-4b88-ab1e-681bac20d41f",
        "customDetails": null,
        "description": "'TLS Certificate Using Weak Cipher'\n",
        "displayName": "TLS Certificate Using Weak Cipher - Informational",
        "enabled": true,
        "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"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "SingleAlert"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": false,
            "groupByAlertDetails": [],
            "groupByCustomDetails": [],
            "groupByEntities": [],
            "lookbackDuration": "PT5H",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CTM360/Analytic Rules/TLSCertificateUsingWeakCipherInformational.yaml",
        "query": "HackerViewLog_Azure_1_CL | where severity_s == \"low\" | where progress_status_s == \"New\" | where status_s != \"inactive\"  | where issue_name_s == \"TLS Certificate Using Weak Cipher\"",
        "queryFrequency": "PT5M",
        "queryPeriod": "PT5M",
        "severity": "Informational",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT5H",
        "suppressionEnabled": false,
        "tactics": [
          "CredentialAccess",
          "DefenseEvasion",
          "LateralMovement",
          "Persistence"
        ],
        "techniques": [
          "T1210",
          "T1212",
          "T1556"
        ],
        "templateVersion": "1.0.2",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}