Jonhnathan
b4c84e8a40
* Update Tags * Bump updated date separately to be easy to revert if needed * Update resource_development_ml_linux_anomalous_compiler_activity.toml * Apply changes from the discussion * Update persistence_init_d_file_creation.toml * Update defense_evasion_timestomp_sysmon.toml * Update defense_evasion_application_removed_from_blocklist_in_google_workspace.toml * Update missing Tactic tags * Update unit tests to match new tags * Add missing IG tags * Delete okta_threat_detected_by_okta_threatinsight.toml * Update command_and_control_google_drive_malicious_file_download.toml * Update persistence_rc_script_creation.toml * Mass bump * Update persistence_shell_activity_by_web_server.toml * . --------- Co-authored-by: Mika Ayenson <Mika.ayenson@elastic.co> Co-authored-by: Mika Ayenson <Mikaayenson@users.noreply.github.com>
63 lines
2.3 KiB
TOML
63 lines
2.3 KiB
TOML
[metadata]
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creation_date = "2020/08/17"
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integration = ["azure"]
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maturity = "production"
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min_stack_comments = "New fields added: required_fields, related_integrations, setup"
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min_stack_version = "8.3.0"
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updated_date = "2023/06/22"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies command execution on a virtual machine (VM) in Azure. A Virtual Machine Contributor role lets you manage
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virtual machines, but not access them, nor access the virtual network or storage account they’re connected to. However,
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commands can be run via PowerShell on the VM, which execute as System. Other roles, such as certain Administrator roles
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may be able to execute commands on a VM as well.
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"""
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false_positives = [
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"""
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Command execution on a virtual machine may be done by a system or network administrator. Verify whether the
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username, hostname, and/or resource name should be making changes in your environment. Command execution from
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unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted
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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 Command Execution on Virtual Machine"
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note = """## Setup
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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 = [
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"https://adsecurity.org/?p=4277",
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"https://posts.specterops.io/attacking-azure-azure-ad-and-introducing-powerzure-ca70b330511a",
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"https://docs.microsoft.com/en-us/azure/role-based-access-control/built-in-roles#virtual-machine-contributor",
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]
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risk_score = 47
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rule_id = "60884af6-f553-4a6c-af13-300047455491"
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severity = "medium"
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tags = ["Domain: Cloud", "Data Source: Azure", "Use Case: Log Auditing", "Tactic: Execution"]
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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.COMPUTE/VIRTUALMACHINES/RUNCOMMAND/ACTION" 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 = "T1059"
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name = "Command and Scripting Interpreter"
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reference = "https://attack.mitre.org/techniques/T1059/"
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[rule.threat.tactic]
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id = "TA0002"
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name = "Execution"
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reference = "https://attack.mitre.org/tactics/TA0002/"
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