1Password - User added to privileged group

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Id	849ea271-cd9c-4afe-a13b-ddbbac5fc6d3
Rulename	1Password - User added to privileged group
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/
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 - User added to privileged group.yaml
Version	1.0.0
Arm template	849ea271-cd9c-4afe-a13b-ddbbac5fc6d3.json

KQL

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
    )

YAML

triggerThreshold: 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/  
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
triggerOperator: gt
entityMappings:
- entityType: Account
  fieldMappings:
  - identifier: FullName
    columnName: ActorUsername
- entityType: Account
  fieldMappings:
  - identifier: FullName
    columnName: TargetUsername
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: SrcIpAddr
name: 1Password - User added to privileged group
incidentConfiguration:
  groupingConfiguration:
    enabled: true
    lookbackDuration: 30m
    reopenClosedIncident: false
    matchingMethod: AllEntities
  createIncident: true
version: 1.0.0
severity: Medium
eventGroupingSettings:
  aggregationKind: SingleAlert
requiredDataConnectors:
- connectorId: 1Password
  dataTypes:
  - OnePasswordEventLogs_CL
suppressionEnabled: false
queryPeriod: 5m
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/1Password/Analytics Rules/1Password - User added to privileged group.yaml
queryFrequency: 5m
tactics:
- Persistence
kind: Scheduled
suppressionDuration: 5h
id: 849ea271-cd9c-4afe-a13b-ddbbac5fc6d3

ARM