[metadata]
creation_date = "2020/08/18"
maturity = "production"
updated_date = "2020/12/15"

[rule]
author = ["Elastic"]
description = """
Identifies 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.
"""
false_positives = [
    """
    Event 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.
    """,
]
from = "now-25m"
index = ["filebeat-*", "logs-azure*"]
language = "kuery"
license = "Elastic License"
name = "Azure Event Hub Deletion"
note = "The Azure Filebeat module must be enabled to use this rule."
references = [
    "https://docs.microsoft.com/en-us/azure/event-hubs/event-hubs-about",
    "https://azure.microsoft.com/en-in/services/event-hubs/",
    "https://docs.microsoft.com/en-us/azure/event-hubs/event-hubs-features",
]
risk_score = 47
rule_id = "e0f36de1-0342-453d-95a9-a068b257b053"
severity = "medium"
tags = ["Elastic", "Cloud", "Azure", "Continuous Monitoring", "SecOps", "Log Auditing"]
type = "query"

query = '''
event.dataset:azure.activitylogs and azure.activitylogs.operation_name:MICROSOFT.EVENTHUB/NAMESPACES/EVENTHUBS/DELETE and event.outcome:(Success or success)
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1562"
name = "Impair Defenses"
reference = "https://attack.mitre.org/techniques/T1562/"
[[rule.threat.technique.subtechnique]]
id = "T1562.001"
name = "Disable or Modify Tools"
reference = "https://attack.mitre.org/techniques/T1562/001/"


[rule.threat.tactic]
id = "TA0005"
name = "Defense Evasion"
reference = "https://attack.mitre.org/tactics/TA0005/"

