Azure secure score block legacy authentication
Id | C27BB559-28C5-4924-A7DA-3BF04CD02C8F |
Rulename | Azure secure score block legacy authentication |
Description | This query searches for most compromising sign-in attempts come from legacy authentication. Older office clients such as Office 2010 do not support modern authentication and use legacy protocols such as IMAP, SMTP, and POP3. Legacy authentication does not support multi-factor authentication (MFA). Even if an MFA policy is configured in your environment, bad actors can bypass these enforcements through legacy protocols. |
Severity | High |
Tactics | CredentialAccess |
Techniques | T1212 T1556 |
Required data connectors | SenservaPro |
Kind | Scheduled |
Query frequency | 6h |
Query period | 6h |
Trigger threshold | 0 |
Trigger operator | gt |
Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SenservaPro/Analytic Rules/BlockLegacyAuthentication.yaml |
Version | 1.0.1 |
Arm template | C27BB559-28C5-4924-A7DA-3BF04CD02C8F.json |
SenservaPro_CL
| where ControlName_s == 'AzureSecureScoreBlockLegacyAuthentication'
triggerThreshold: 0
requiredDataConnectors:
- connectorId: SenservaPro
dataTypes:
- SenservaPro_CL
severity: High
queryFrequency: 6h
id: C27BB559-28C5-4924-A7DA-3BF04CD02C8F
relevantTechniques:
- T1212
- T1556
queryPeriod: 6h
name: Azure secure score block legacy authentication
status: Available
kind: Scheduled
tactics:
- CredentialAccess
triggerOperator: gt
version: 1.0.1
entityMappings:
- entityType: Account
fieldMappings:
- columnName: ControlName_s
identifier: Name
- columnName: TenantId
identifier: AadTenantId
- columnName: TenantDisplayName_s
identifier: DisplayName
- entityType: SecurityGroup
fieldMappings:
- columnName: Group_s
identifier: DistinguishedName
- entityType: AzureResource
fieldMappings:
- columnName: SourceSystem
identifier: ResourceId
description: |
'This query searches for most compromising sign-in attempts come from legacy authentication.
Older office clients such as Office 2010 do not support modern authentication and use legacy protocols such as IMAP, SMTP, and POP3.
Legacy authentication does not support multi-factor authentication (MFA).
Even if an MFA policy is configured in your environment, bad actors can bypass these enforcements through legacy protocols.'
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SenservaPro/Analytic Rules/BlockLegacyAuthentication.yaml
query: |
SenservaPro_CL
| where ControlName_s == 'AzureSecureScoreBlockLegacyAuthentication'
{
"$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/C27BB559-28C5-4924-A7DA-3BF04CD02C8F')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/C27BB559-28C5-4924-A7DA-3BF04CD02C8F')]",
"properties": {
"alertRuleTemplateName": "C27BB559-28C5-4924-A7DA-3BF04CD02C8F",
"customDetails": null,
"description": "'This query searches for most compromising sign-in attempts come from legacy authentication. \n Older office clients such as Office 2010 do not support modern authentication and use legacy protocols such as IMAP, SMTP, and POP3. \n Legacy authentication does not support multi-factor authentication (MFA).\n Even if an MFA policy is configured in your environment, bad actors can bypass these enforcements through legacy protocols.'\n",
"displayName": "Azure secure score block legacy authentication",
"enabled": true,
"entityMappings": [
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "ControlName_s",
"identifier": "Name"
},
{
"columnName": "TenantId",
"identifier": "AadTenantId"
},
{
"columnName": "TenantDisplayName_s",
"identifier": "DisplayName"
}
]
},
{
"entityType": "SecurityGroup",
"fieldMappings": [
{
"columnName": "Group_s",
"identifier": "DistinguishedName"
}
]
},
{
"entityType": "AzureResource",
"fieldMappings": [
{
"columnName": "SourceSystem",
"identifier": "ResourceId"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SenservaPro/Analytic Rules/BlockLegacyAuthentication.yaml",
"query": "SenservaPro_CL\n| where ControlName_s == 'AzureSecureScoreBlockLegacyAuthentication'\n",
"queryFrequency": "PT6H",
"queryPeriod": "PT6H",
"severity": "High",
"status": "Available",
"subTechniques": [],
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"CredentialAccess"
],
"techniques": [
"T1212",
"T1556"
],
"templateVersion": "1.0.1",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}