IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Azure External Guest User Invitation
editAzure External Guest User Invitation
editIdentifies an invitation to an external user in Azure Active Directory (AD). Azure AD is extended to include collaboration, allowing you to invite people from outside your organization to be guest users in your cloud account. Unless there is a business need to provision guest access, it is best practice avoid creating guest users. Guest users could potentially be overlooked indefinitely leading to a potential vulnerability.
Rule type: query
Rule indices:
- filebeat-*
- logs-azure*
Severity: low
Risk score: 21
Runs every: 5m
Searches indices from: now-25m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
Tags:
- Elastic
- Cloud
- Azure
- Continuous Monitoring
- SecOps
- Identity and Access
Version: 7
Rule authors:
- Elastic
Rule license: Elastic License v2
Investigation guide
editRule query
editevent.dataset:azure.auditlogs and azure.auditlogs.operation_name:"Invite external user" and azure.auditlogs.properties.target_resources.*.display_name:guest and event.outcome:(Success or success)
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Initial Access
- ID: TA0001
- Reference URL: https://attack.mitre.org/tactics/TA0001/
-
Technique:
- Name: Valid Accounts
- ID: T1078
- Reference URL: https://attack.mitre.org/techniques/T1078/
-
Tactic:
- Name: Persistence
- ID: TA0003
- Reference URL: https://attack.mitre.org/tactics/TA0003/
-
Technique:
- Name: Valid Accounts
- ID: T1078
- Reference URL: https://attack.mitre.org/techniques/T1078/