Azure Event Hub Deletion
editAzure Event Hub Deletion
editIdentifies an Event Hub deletion in Azure. An Event Hub is an event processing service that ingests and processes large volumes of events and data. An adversary may delete an Event Hub in an attempt to evade detection.
Rule type: query
Rule indices:
- filebeat-*
- logs-azure*
Severity: medium
Risk score: 47
Runs every: 5 minutes
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
- Log Auditing
Version: 3 (version history)
Added (Elastic Stack release): 7.10.0
Last modified (Elastic Stack release): 7.11.2
Rule authors: Elastic
Rule license: Elastic License
Potential false positives
editEvent Hub deletions may be done by a system or network administrator. Verify whether the username, hostname, and/or resource name should be making changes in your environment. Event Hub deletions from unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule.
Investigation guide
editThe Azure Filebeat module must be enabled to use this rule.
Rule query
editevent.dataset:azure.activitylogs and azure.activitylogs.operation_name :MICROSOFT.EVENTHUB/NAMESPACES/EVENTHUBS/DELETE and event.outcome:(Success or success)
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Impair Defenses
- ID: T1562
- Reference URL: https://attack.mitre.org/techniques/T1562/
Rule version history
edit- Version 3 (7.11.2 release)
-
- Formatting only
- Version 2 (7.11.0 release)
-
-
Updated query, changed from:
event.dataset:azure.activitylogs and azure.activitylogs.operation_name :MICROSOFT.EVENTHUB/NAMESPACES/EVENTHUBS/DELETE and event.outcome:Success
-