Name:Azure AD Tenant Wide Admin Consent Granted id:dc02c0ee-6ac0-4c7f-87ba-8ce43a4e4418 version:4 date:2024-09-30 author:Mauricio Velazco, Splunk status:production type:TTP Description:The following analytic identifies instances where admin consent is granted to an application within an Azure AD tenant. It leverages Azure AD audit logs, specifically events related to the admin consent action within the ApplicationManagement category. This activity is significant because admin consent allows applications to access data across the entire tenant, potentially exposing vast amounts of organizational data. If confirmed malicious, an attacker could gain extensive and persistent access to sensitive data, leading to data exfiltration, espionage, further malicious activities, and potential compliance violations. Data_source:
-Azure Active Directory Consent to application
search:`azure_monitor_aad` operationName="Consent to application" | eval new_field=mvindex('properties.targetResources{}.modifiedProperties{}.newValue', 4) | rename properties.* as * | rex field=new_field "ConsentType: (?<ConsentType>[^\,]+)" | rex field=new_field "Scope: (?<Scope>[^\,]+)" | search ConsentType = "AllPrincipals" | stats count min(_time) as firstTime max(_time) as lastTime by operationName, user, targetResources{}.displayName, targetResources{}.id, ConsentType, Scope | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `azure_ad_tenant_wide_admin_consent_granted_filter`
how_to_implement:You must install the latest version of Splunk Add-on for Microsoft Cloud Services from Splunkbase (https://splunkbase.splunk.com/app/3110/#/details). You must be ingesting Azure Active Directory events into your Splunk environment through an EventHub. This analytic was written to be used with the azure:monitor:aad sourcetype leveraging the Auditlogs log category. known_false_positives:Legitimate applications may be granted tenant wide consent, filter as needed. References: -https://attack.mitre.org/techniques/T1098/003/ -https://www.mandiant.com/resources/blog/remediation-and-hardening-strategies-for-microsoft-365-to-defend-against-unc2452 -https://learn.microsoft.com/en-us/security/operations/incident-response-playbook-app-consent -https://learn.microsoft.com/en-us/azure/active-directory/manage-apps/grant-admin-consent?pivots=portal -https://microsoft.github.io/Azure-Threat-Research-Matrix/Persistence/AZT501/AZT501-2/ drilldown_searches: name:'View the detection results for - "$user$"' search:'%original_detection_search% | search user = "$user$"' earliest_offset:'$info_min_time$' latest_offset:'$info_max_time$' name:'View risk events for the last 7 days for - "$user$"' search:'| from datamodel Risk.All_Risk | search normalized_risk_object IN ("$user$") starthoursago=168 | stats count min(_time) as firstTime max(_time) as lastTime values(search_name) as "Search Name" values(risk_message) as "Risk Message" values(analyticstories) as "Analytic Stories" values(annotations._all) as "Annotations" values(annotations.mitre_attack.mitre_tactic) as "ATT&CK Tactics" by normalized_risk_object | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`' earliest_offset:'$info_min_time$' latest_offset:'$info_max_time$' tags: analytic_story: - 'Azure Active Directory Persistence' - 'NOBELIUM Group' asset_type:Azure Tenant confidence:50 impact:90 message:Administrator $user$ consented an OAuth application for the tenant. mitre_attack_id: - 'T1098' - 'T1098.003' observable: name:'user' type:'User' - role: - 'Victim' product: - 'Splunk Enterprise' - 'Splunk Enterprise Security' - 'Splunk Cloud' risk_score:45 required_fields: - '_time' - 'operationName' - 'user' - 'properties.targetResources{}.modifiedProperties{}.newValue' - 'properties.targetResources{}.displayName' - 'properties.targetResources{}.id' security_domain:identity
