defense_evasion_azure_automation_runbook_deleted.toml

[metadata]
creation_date = "2020/09/01"
integration = ["azure"]
maturity = "production"
updated_date = "2024/05/21"

[rule]
author = ["Elastic"]
description = """
Identifies when an Azure Automation runbook is deleted. An adversary may delete an Azure Automation runbook in order to
disrupt their target's automated business operations or to remove a malicious runbook for defense evasion.
"""
from = "now-25m"
index = ["filebeat-*", "logs-azure*"]
language = "kuery"
license = "Elastic License v2"
name = "Azure Automation Runbook Deleted"
note = """## Setup

The Azure Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule."""
references = [
    "https://powerzure.readthedocs.io/en/latest/Functions/operational.html#create-backdoor",
    "https://github.com/hausec/PowerZure",
    "https://posts.specterops.io/attacking-azure-azure-ad-and-introducing-powerzure-ca70b330511a",
    "https://azure.microsoft.com/en-in/blog/azure-automation-runbook-management/",
]
risk_score = 21
rule_id = "8ddab73b-3d15-4e5d-9413-47f05553c1d7"
severity = "low"
tags = ["Domain: Cloud", "Data Source: Azure", "Use Case: Configuration Audit", "Tactic: Defense Evasion"]
timestamp_override = "event.ingested"
type = "query"

query = '''
event.dataset:azure.activitylogs and
    azure.activitylogs.operation_name:"MICROSOFT.AUTOMATION/AUTOMATIONACCOUNTS/RUNBOOKS/DELETE" and
    event.outcome:(Success or success)
'''


[[rule.threat]]
framework = "MITRE ATT&CK"

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