1Password - Secret extraction post vault access change by administrator

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Id	6711b747-16d7-4df4-9f61-8633617f45d7
Rulename	1Password - Secret extraction post vault access change by administrator
Description	This will alert when a secret extraction has occurred after an administrator has changed their own vault access permissions within that same vault. Ref: https://1password.com/ Ref: https://github.com/securehats/
Severity	High
Tactics	CredentialAccess
Techniques	T1555
Required data connectors	1Password
Kind	Scheduled
Query frequency	5m
Query period	1h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/1Password/Analytics Rules/1Password - Secret Extraction Post Vault Access Change By Administrator.yaml
Version	1.0.0
Arm template	6711b747-16d7-4df4-9f61-8633617f45d7.json

KQL

let lookback = 1h;
let secretExtractionActivity =
    OnePasswordEventLogs_CL
    | where TimeGenerated between (ago(lookback) .. now())
    | where log_source == "itemusages"
    | where action has_any("server-fetch", "reveal", "secure-copy")
;
OnePasswordEventLogs_CL
| where log_source == "auditevents"
| where (action == "grant" and object_type  == "uva") or (action == "update" and object_type  == "uva")
| where tostring(actor_details.uuid) == tostring(aux_details.uuid)
| extend
    userUuid = tostring(actor_details.uuid)
    , vaultUuid = tostring(object_uuid)
| join (
    secretExtractionActivity
    | extend
        userUuid = tostring(user.uuid)
        , vaultUuid = tostring(vault_uuid)
    )
    on $left.userUuid == $right.userUuid and $left.vaultUuid == $right.vaultUuid
| extend
    auditevents = bag_pack("action", action, "object_type", object_type)
    , itemusages = bag_pack("action", action1, "object_type", object_type1)
    , vault_details = bag_pack("vault_uuid", vault_uuid1, "item_uuid", item_uuid1)
| project
    TimeGenerated
    , actor_details
    , target_details = aux_details
    , location_details = location
    , client_details = client1
    , auditevents
    , itemusages
    , vault_details
    , TargetUsername = tostring(user1.email)
    , SrcIpAddr = tostring(client1.ip_address)

YAML

queryFrequency: 5m
requiredDataConnectors:
- connectorId: 1Password
  dataTypes:
  - OnePasswordEventLogs_CL
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/1Password/Analytics Rules/1Password - Secret Extraction Post Vault Access Change By Administrator.yaml
suppressionDuration: 1h
name: 1Password - Secret extraction post vault access change by administrator
description: |-
  This will alert when a secret extraction has occurred after an administrator has changed their own vault access permissions within that same vault.
  Ref: https://1password.com/
  Ref: https://github.com/securehats/  
severity: High
suppressionEnabled: false
kind: Scheduled
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    lookbackDuration: 1h
    matchingMethod: AllEntities
    reopenClosedIncident: false
    enabled: true
triggerThreshold: 0
version: 1.0.0
eventGroupingSettings:
  aggregationKind: SingleAlert
relevantTechniques:
- T1555
id: 6711b747-16d7-4df4-9f61-8633617f45d7
triggerOperator: gt
queryPeriod: 1h
tactics:
- CredentialAccess
query: |-
  let lookback = 1h;
  let secretExtractionActivity =
      OnePasswordEventLogs_CL
      | where TimeGenerated between (ago(lookback) .. now())
      | where log_source == "itemusages"
      | where action has_any("server-fetch", "reveal", "secure-copy")
  ;
  OnePasswordEventLogs_CL
  | where log_source == "auditevents"
  | where (action == "grant" and object_type  == "uva") or (action == "update" and object_type  == "uva")
  | where tostring(actor_details.uuid) == tostring(aux_details.uuid)
  | extend
      userUuid = tostring(actor_details.uuid)
      , vaultUuid = tostring(object_uuid)
  | join (
      secretExtractionActivity
      | extend
          userUuid = tostring(user.uuid)
          , vaultUuid = tostring(vault_uuid)
      )
      on $left.userUuid == $right.userUuid and $left.vaultUuid == $right.vaultUuid
  | extend
      auditevents = bag_pack("action", action, "object_type", object_type)
      , itemusages = bag_pack("action", action1, "object_type", object_type1)
      , vault_details = bag_pack("vault_uuid", vault_uuid1, "item_uuid", item_uuid1)
  | project
      TimeGenerated
      , actor_details
      , target_details = aux_details
      , location_details = location
      , client_details = client1
      , auditevents
      , itemusages
      , vault_details
      , TargetUsername = tostring(user1.email)
      , SrcIpAddr = tostring(client1.ip_address)  
entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: TargetUsername
  entityType: Account
- fieldMappings:
  - identifier: Address
    columnName: SrcIpAddr
  entityType: IP

ARM