Justin Ibarra
65 lines
2.1 KiB
TOML
65 lines
2.1 KiB
TOML
[metadata]
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creation_date = "2020/08/20"
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maturity = "production"
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updated_date = "2021/05/10"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies changes to container access levels in Azure. Anonymous public read access to containers and blobs in Azure is
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a way to share data broadly, but can present a security risk if access to sensitive data is not managed judiciously.
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"""
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false_positives = [
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"""
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Access level modifications may be done by a system or network administrator. Verify whether the username, hostname,
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and/or resource name should be making changes in your environment. Access level modifications from unfamiliar users
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or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule.
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""",
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]
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from = "now-25m"
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index = ["filebeat-*", "logs-azure*"]
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language = "kuery"
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license = "Elastic License v2"
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name = "Azure Blob Container Access Level Modification"
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note = """## Config
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The Azure Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule."""
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references = ["https://docs.microsoft.com/en-us/azure/storage/blobs/anonymous-read-access-prevent"]
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risk_score = 21
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rule_id = "2636aa6c-88b5-4337-9c31-8d0192a8ef45"
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severity = "low"
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tags = ["Elastic", "Cloud", "Azure", "Continuous Monitoring", "SecOps", "Asset Visibility"]
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timestamp_override = "event.ingested"
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type = "query"
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query = '''
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event.dataset:azure.activitylogs and azure.activitylogs.operation_name:"MICROSOFT.STORAGE/STORAGEACCOUNTS/BLOBSERVICES/CONTAINERS/WRITE" and event.outcome:(Success or success)
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'''
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[[rule.threat]]
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framework = "MITRE ATT&CK"
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[[rule.threat.technique]]
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id = "T1526"
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name = "Cloud Service Discovery"
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reference = "https://attack.mitre.org/techniques/T1526/"
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[rule.threat.tactic]
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id = "TA0007"
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name = "Discovery"
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reference = "https://attack.mitre.org/tactics/TA0007/"
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[[rule.threat]]
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framework = "MITRE ATT&CK"
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[[rule.threat.technique]]
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id = "T1190"
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name = "Exploit Public-Facing Application"
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reference = "https://attack.mitre.org/techniques/T1190/"
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[rule.threat.tactic]
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id = "TA0001"
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name = "Initial Access"
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reference = "https://attack.mitre.org/tactics/TA0001/"
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