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google_workspace_admin_role_assignment.yaral
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google_workspace_admin_role_assignment.yaral
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/*
* Copyright 2023 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
rule google_workspace_admin_role_assignment {
meta:
author = "Google Cloud Security"
description = "Identifies when an administrator role is assigned to a user account in Google Workspace. Security teams can monitor for the malicious or accidental assignment of administrator privileges to prevent unauthorized access to data."
mitre_attack_tactic = "Persistence"
mitre_attack_technique = "Account Manipulation: Additional Cloud Roles"
mitre_attack_url = "https://attack.mitre.org/techniques/T1098/003/"
mitre_attack_version = "v13.1"
type = "Alert"
data_source = "Workspace Activity"
severity = "High"
priority = "High"
events:
$ws.metadata.vendor_name = "Google Workspace"
$ws.metadata.product_name = "admin"
$ws.metadata.event_type = "USER_RESOURCE_UPDATE_PERMISSIONS"
$ws.metadata.product_event_type = "ASSIGN_ROLE"
$ws.security_result.category_details = "DELEGATED_ADMIN_SETTINGS"
outcome:
$risk_score = max(35 +
if($ws.target.resource.attribute.roles.name = "_SEED_ADMIN_ROLE", 50)
)
$mitre_attack_tactic = "Persistence"
$mitre_attack_technique = "Account Manipulation: Additional Cloud Roles"
$mitre_attack_technique_id = "T1098.003"
$event_count = count_distinct($ws.metadata.id)
$principal_ip = array_distinct($ws.principal.ip)
$principal_country = array_distinct($ws.principal.ip_geo_artifact.location.country_or_region)
$principal_state = array_distinct($ws.principal.ip_geo_artifact.location.state)
$principal_user_emails = array_distinct($ws.principal.user.email_addresses)
$target_user_emails = array_distinct($ws.target.user.email_addresses)
$principal_user_id = $ws.principal.user.userid
$role_name = array_distinct($ws.target.resource.attribute.roles.name)
condition:
$ws
}