Mika Ayenson
65 lines
2.2 KiB
TOML
65 lines
2.2 KiB
TOML
[metadata]
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creation_date = "2021/01/14"
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maturity = "production"
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updated_date = "2022/07/18"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies modifications to an environment variable using the built-in launchctl command. Adversaries may execute their
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own malicious payloads by hijacking certain environment variables to load arbitrary libraries or bypass certain
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restrictions.
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"""
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from = "now-9m"
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index = ["auditbeat-*", "logs-endpoint.events.*"]
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language = "kuery"
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license = "Elastic License v2"
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name = "Modification of Environment Variable via Launchctl"
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references = [
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"https://github.com/rapid7/metasploit-framework/blob/master//modules/post/osx/escalate/tccbypass.rb",
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]
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risk_score = 47
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rule_id = "7453e19e-3dbf-4e4e-9ae0-33d6c6ed15e1"
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severity = "medium"
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tags = ["Elastic", "Host", "macOS", "Threat Detection", "Defense Evasion"]
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timestamp_override = "event.ingested"
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type = "query"
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query = '''
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event.category:process and event.type:start and
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process.name:launchctl and
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process.args:(setenv and not (JAVA*_HOME or
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RUNTIME_JAVA_HOME or
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DBUS_LAUNCHD_SESSION_BUS_SOCKET or
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ANT_HOME or
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LG_WEBOS_TV_SDK_HOME or
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WEBOS_CLI_TV or
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EDEN_ENV)
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) and
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not process.parent.executable:("/Applications/NoMachine.app/Contents/Frameworks/bin/nxserver.bin" or
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"/usr/local/bin/kr" or
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"/Applications/NoMachine.app/Contents/Frameworks/bin/nxserver.bin" or
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"/Applications/IntelliJ IDEA CE.app/Contents/jbr/Contents/Home/lib/jspawnhelper") and
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not process.args : "*.vmoptions"
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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 = "T1574"
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name = "Hijack Execution Flow"
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reference = "https://attack.mitre.org/techniques/T1574/"
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[[rule.threat.technique.subtechnique]]
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id = "T1574.007"
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name = "Path Interception by PATH Environment Variable"
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reference = "https://attack.mitre.org/techniques/T1574/007/"
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[rule.threat.tactic]
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id = "TA0005"
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name = "Defense Evasion"
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reference = "https://attack.mitre.org/tactics/TA0005/"
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