Microsoft Sentinel Analytic Rules
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1Password - User account MFA settings changed

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Id3c8140eb-e946-4bf2-8c61-03e4df56d400
Rulename1Password - User account MFA settings changed
DescriptionThis will alert when a user creates, updates, or disables the user account MFA settings. Once this analytics rule is triggered it will group all related future alerts for upto an hour when all related entities are the same.



Ref: https://1password.com/

Ref: https://github.com/securehats/
SeverityMedium
TacticsPersistence
DefenseEvasion
TechniquesT1556
Required data connectors1Password
KindScheduled
Query frequency30m
Query period30m
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/1Password/Analytics Rules/1Password - User account MFA settings changed.yaml
Version1.0.0
Arm template3c8140eb-e946-4bf2-8c61-03e4df56d400.json
Deploy To Azure
OnePasswordEventLogs_CL
| where log_source == "auditevents"
| where action has_any("enblmfa", "updatmfa", "disblmfa")
| where object_type == "user"
| extend
    ActorUsername = actor_details.email
    , SrcIpAddr = session.ip
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    enabled: true
    matchingMethod: AllEntities
    reopenClosedIncident: false
    lookbackDuration: 1h
requiredDataConnectors:
- connectorId: 1Password
  dataTypes:
  - OnePasswordEventLogs_CL
query: |-
  OnePasswordEventLogs_CL
  | where log_source == "auditevents"
  | where action has_any("enblmfa", "updatmfa", "disblmfa")
  | where object_type == "user"
  | extend
      ActorUsername = actor_details.email
      , SrcIpAddr = session.ip  
description: |-
  This will alert when a user creates, updates, or disables the user account MFA settings. Once this analytics rule is triggered it will group all related future alerts for upto an hour when all related entities are the same.

  Ref: https://1password.com/
  Ref: https://github.com/securehats/  
kind: Scheduled
version: 1.0.0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/1Password/Analytics Rules/1Password - User account MFA settings changed.yaml
relevantTechniques:
- T1556
entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: ActorUsername
  entityType: Account
- fieldMappings:
  - identifier: Address
    columnName: SrcIpAddr
  entityType: IP
queryFrequency: 30m
suppressionDuration: 5h
id: 3c8140eb-e946-4bf2-8c61-03e4df56d400
suppressionEnabled: false
eventGroupingSettings:
  aggregationKind: SingleAlert
triggerThreshold: 0
name: 1Password - User account MFA settings changed
tactics:
- Persistence
- DefenseEvasion
queryPeriod: 30m
triggerOperator: gt
severity: Medium
{
  "$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/3c8140eb-e946-4bf2-8c61-03e4df56d400')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/3c8140eb-e946-4bf2-8c61-03e4df56d400')]",
      "properties": {
        "alertRuleTemplateName": "3c8140eb-e946-4bf2-8c61-03e4df56d400",
        "customDetails": null,
        "description": "This will alert when a user creates, updates, or disables the user account MFA settings. Once this analytics rule is triggered it will group all related future alerts for upto an hour when all related entities are the same.\n\nRef: https://1password.com/\nRef: https://github.com/securehats/",
        "displayName": "1Password - User account MFA settings changed",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "ActorUsername",
                "identifier": "FullName"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "SrcIpAddr",
                "identifier": "Address"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "SingleAlert"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": true,
            "lookbackDuration": "PT1H",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/1Password/Analytics Rules/1Password - User account MFA settings changed.yaml",
        "query": "OnePasswordEventLogs_CL\n| where log_source == \"auditevents\"\n| where action has_any(\"enblmfa\", \"updatmfa\", \"disblmfa\")\n| where object_type == \"user\"\n| extend\n    ActorUsername = actor_details.email\n    , SrcIpAddr = session.ip",
        "queryFrequency": "PT30M",
        "queryPeriod": "PT30M",
        "severity": "Medium",
        "subTechniques": [],
        "suppressionDuration": "PT5H",
        "suppressionEnabled": false,
        "tactics": [
          "DefenseEvasion",
          "Persistence"
        ],
        "techniques": [
          "T1556"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}