1Password - User added to privileged group

let watchlist =
    _GetWatchlist("PG1PW")
    | project SearchKey
;
let groups = dynamic([""]);
OnePasswordEventLogs_CL
| where log_source == "auditevents"
| where action == "join"
| where object_type == "gm"
| where tostring(actor_details.email) != tostring(aux_details.email)
// Enable the line below when using the "Privileged Groups - 1PW" watchlist
| where object_uuid in (watchlist)
// Enable the line below when using the dynamic groups list within the analytics rule itself
// | where object_uuid in (groups)
| extend
    TargetUsername = aux_details.email
    , ActorUsername = actor_details.email
    , SrcIpAddr = session.ip
    , GroupRole = case(
        aux_info == "R", "Group member"
        , aux_info == "A", "Group manager"
        , aux_info
    )

triggerThreshold: 0
suppressionEnabled: false
query: |-
  let watchlist =
      _GetWatchlist("PG1PW")
      | project SearchKey
  ;
  let groups = dynamic([""]);
  OnePasswordEventLogs_CL
  | where log_source == "auditevents"
  | where action == "join"
  | where object_type == "gm"
  | where tostring(actor_details.email) != tostring(aux_details.email)
  // Enable the line below when using the "Privileged Groups - 1PW" watchlist
  | where object_uuid in (watchlist)
  // Enable the line below when using the dynamic groups list within the analytics rule itself
  // | where object_uuid in (groups)
  | extend
      TargetUsername = aux_details.email
      , ActorUsername = actor_details.email
      , SrcIpAddr = session.ip
      , GroupRole = case(
          aux_info == "R", "Group member"
          , aux_info == "A", "Group manager"
          , aux_info
      )  
relevantTechniques:
- T1098
tactics:
- Persistence
entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: ActorUsername
  entityType: Account
- fieldMappings:
  - identifier: FullName
    columnName: TargetUsername
  entityType: Account
- fieldMappings:
  - identifier: Address
    columnName: SrcIpAddr
  entityType: IP
eventGroupingSettings:
  aggregationKind: SingleAlert
requiredDataConnectors:
- dataTypes:
  - OnePasswordEventLogs_CL
  connectorId: 1Password
kind: Scheduled
queryPeriod: 5m
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    lookbackDuration: 30m
    reopenClosedIncident: false
    matchingMethod: AllEntities
    enabled: true
severity: Medium
id: 849ea271-cd9c-4afe-a13b-ddbbac5fc6d3
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/1Password/Analytics Rules/1Password - User added to privileged group.yaml
version: 1.0.0
description: |-
  This will alert when a user is added to a privileged group which has been implemented by an actor that was not the target user account. Once the analytics rule is triggered it will group all related future alerts for upto 30 minutes when all related entities are the same.

  Ref: https://1password.com/
  Ref: https://github.com/securehats/  
triggerOperator: gt
name: 1Password - User added to privileged group
suppressionDuration: 5h
queryFrequency: 5m

{
  "$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/849ea271-cd9c-4afe-a13b-ddbbac5fc6d3')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/849ea271-cd9c-4afe-a13b-ddbbac5fc6d3')]",
      "properties": {
        "alertRuleTemplateName": "849ea271-cd9c-4afe-a13b-ddbbac5fc6d3",
        "customDetails": null,
        "description": "This will alert when a user is added to a privileged group which has been implemented by an actor that was not the target user account. Once the analytics rule is triggered it will group all related future alerts for upto 30 minutes when all related entities are the same.\n\nRef: https://1password.com/\nRef: https://github.com/securehats/",
        "displayName": "1Password - User added to privileged group",
        "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": "PT30M",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/1Password/Analytics Rules/1Password - User added to privileged group.yaml",
        "query": "let watchlist =\n    _GetWatchlist(\"PG1PW\")\n    | project SearchKey\n;\nlet groups = dynamic([\"\"]);\nOnePasswordEventLogs_CL\n| where log_source == \"auditevents\"\n| where action == \"join\"\n| where object_type == \"gm\"\n| where tostring(actor_details.email) != tostring(aux_details.email)\n// Enable the line below when using the \"Privileged Groups - 1PW\" watchlist\n| where object_uuid in (watchlist)\n// Enable the line below when using the dynamic groups list within the analytics rule itself\n// | where object_uuid in (groups)\n| extend\n    TargetUsername = aux_details.email\n    , ActorUsername = actor_details.email\n    , SrcIpAddr = session.ip\n    , GroupRole = case(\n        aux_info == \"R\", \"Group member\"\n        , aux_info == \"A\", \"Group manager\"\n        , aux_info\n    )",
        "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"
    }
  ]
}