1Password - Non-privileged vault user permission change

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Id	327e0579-7c03-4ec7-acf5-a29dcc4a12b6
Rulename	1Password - Non-privileged vault user permission change
Description	This will alert when user permissions have changed within a non-privileged vault which have been implemented by an actor that was not the target user account. 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/
Severity	Medium
Tactics	Persistence
Techniques	T1098
Required data connectors	1Password
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/1Password/Analytics Rules/1Password - Non-privileged vault user permission change.yaml
Version	1.0.0
Arm template	327e0579-7c03-4ec7-acf5-a29dcc4a12b6.json

KQL

let watchlist =
    _GetWatchlist("PV1PW")
    | project SearchKey
;
// Insert the vault UUIDs below when using the dynamic vaults list within the analytics rule itself
let vaults = dynamic([""]);
OnePasswordEventLogs_CL
| where log_source == "auditevents"
| where action has_any("grant", "revoke", "update")
| where object_type == "uva"
| where tostring(actor_details.email) != tostring(aux_details.email)
// Enable the line below when using the "Privileged Vaults - 1PW" watchlist
| where object_uuid !in (watchlist)
// Enable the line below when using the dynamic vaults list within the analytics rule itself
// | where object_uuid !in (vaults)
| extend
    TargetUsername = aux_details.email
    , ActorUsername = actor_details.email
    , SrcIpAddr = session.ip

YAML

relevantTechniques:
- T1098
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    lookbackDuration: 1h
    enabled: true
    reopenClosedIncident: false
    matchingMethod: AllEntities
name: 1Password - Non-privileged vault user permission change
requiredDataConnectors:
- dataTypes:
  - OnePasswordEventLogs_CL
  connectorId: 1Password
entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: ActorUsername
  entityType: Account
- fieldMappings:
  - identifier: FullName
    columnName: TargetUsername
  entityType: Account
- fieldMappings:
  - identifier: Address
    columnName: SrcIpAddr
  entityType: IP
triggerThreshold: 0
id: 327e0579-7c03-4ec7-acf5-a29dcc4a12b6
tactics:
- Persistence
version: 1.0.0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/1Password/Analytics Rules/1Password - Non-privileged vault user permission change.yaml
queryPeriod: 5m
kind: Scheduled
eventGroupingSettings:
  aggregationKind: SingleAlert
suppressionDuration: 5h
queryFrequency: 5m
severity: Medium
suppressionEnabled: false
description: |-
  This will alert when user permissions have changed within a non-privileged vault which have been implemented by an actor that was not the target user account. 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/  
query: |-
  let watchlist =
      _GetWatchlist("PV1PW")
      | project SearchKey
  ;
  // Insert the vault UUIDs below when using the dynamic vaults list within the analytics rule itself
  let vaults = dynamic([""]);
  OnePasswordEventLogs_CL
  | where log_source == "auditevents"
  | where action has_any("grant", "revoke", "update")
  | where object_type == "uva"
  | where tostring(actor_details.email) != tostring(aux_details.email)
  // Enable the line below when using the "Privileged Vaults - 1PW" watchlist
  | where object_uuid !in (watchlist)
  // Enable the line below when using the dynamic vaults list within the analytics rule itself
  // | where object_uuid !in (vaults)
  | extend
      TargetUsername = aux_details.email
      , ActorUsername = actor_details.email
      , SrcIpAddr = session.ip  
triggerOperator: gt

ARM

{
  "$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/327e0579-7c03-4ec7-acf5-a29dcc4a12b6')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/327e0579-7c03-4ec7-acf5-a29dcc4a12b6')]",
      "properties": {
        "alertRuleTemplateName": "327e0579-7c03-4ec7-acf5-a29dcc4a12b6",
        "customDetails": null,
        "description": "This will alert when user permissions have changed within a non-privileged vault which have been implemented by an actor that was not the target user account. 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 - Non-privileged vault user permission change",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "ActorUsername",
                "identifier": "FullName"
              }
            ]
          },
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "TargetUsername",
                "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 - Non-privileged vault user permission change.yaml",
        "query": "let watchlist =\n    _GetWatchlist(\"PV1PW\")\n    | project SearchKey\n;\n// Insert the vault UUIDs below when using the dynamic vaults list within the analytics rule itself\nlet vaults = dynamic([\"\"]);\nOnePasswordEventLogs_CL\n| where log_source == \"auditevents\"\n| where action has_any(\"grant\", \"revoke\", \"update\")\n| where object_type == \"uva\"\n| where tostring(actor_details.email) != tostring(aux_details.email)\n// Enable the line below when using the \"Privileged Vaults - 1PW\" watchlist\n| where object_uuid !in (watchlist)\n// Enable the line below when using the dynamic vaults list within the analytics rule itself\n// | where object_uuid !in (vaults)\n| extend\n    TargetUsername = aux_details.email\n    , ActorUsername = actor_details.email\n    , SrcIpAddr = session.ip",
        "queryFrequency": "PT5M",
        "queryPeriod": "PT5M",
        "severity": "Medium",
        "subTechniques": [],
        "suppressionDuration": "PT5H",
        "suppressionEnabled": false,
        "tactics": [
          "Persistence"
        ],
        "techniques": [
          "T1098"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}