1Password - Potential insider privilege escalation via group

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Id	398a1cf1-f56f-4700-912c-9bf4c8409ebc
Rulename	1Password - Potential insider privilege escalation via group
Description	This will alert when an actor grants, or updates their own permissions via a group. 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	PrivilegeEscalation
Techniques	T1078
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 - Potential insider privilege escalation via group.yaml
Version	1.0.0
Arm template	398a1cf1-f56f-4700-912c-9bf4c8409ebc.json

KQL

OnePasswordEventLogs_CL
| where log_source == "auditevents"
| where action has_any("join", "role")
| where object_type == "gm"
| where tostring(actor_details.email) == tostring(aux_details.email)
| 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

suppressionEnabled: false
description: |-
  This will alert when an actor grants, or updates their own permissions via a group. 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
tactics:
- PrivilegeEscalation
requiredDataConnectors:
- connectorId: 1Password
  dataTypes:
  - OnePasswordEventLogs_CL
incidentConfiguration:
  groupingConfiguration:
    reopenClosedIncident: false
    lookbackDuration: 1h
    enabled: true
    matchingMethod: AllEntities
  createIncident: true
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/1Password/Analytics Rules/1Password - Potential insider privilege escalation via group.yaml
severity: Medium
name: 1Password - Potential insider privilege escalation via group
suppressionDuration: 5h
eventGroupingSettings:
  aggregationKind: SingleAlert
triggerThreshold: 0
queryPeriod: 5m
query: |-
  OnePasswordEventLogs_CL
  | where log_source == "auditevents"
  | where action has_any("join", "role")
  | where object_type == "gm"
  | where tostring(actor_details.email) == tostring(aux_details.email)
  | 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:
- T1078
id: 398a1cf1-f56f-4700-912c-9bf4c8409ebc
queryFrequency: 5m
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: ActorUsername
    identifier: FullName
- entityType: Account
  fieldMappings:
  - columnName: TargetUsername
    identifier: FullName
- entityType: IP
  fieldMappings:
  - columnName: SrcIpAddr
    identifier: Address
triggerOperator: gt
version: 1.0.0
subTechniques:
- T1078.004

ARM