Justin Ibarra
46d5e37b76
* min_stack all rules to 8.3 * bump date Co-authored-by: Mika Ayenson <mika.ayenson@elastic.co>
71 lines
2.5 KiB
TOML
71 lines
2.5 KiB
TOML
[metadata]
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creation_date = "2020/12/07"
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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 = "2022/08/24"
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[rule]
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author = ["Elastic"]
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description = """
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Detects execution via the Apple script interpreter (osascript) followed by a network connection from the same process
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within a short time period. Adversaries may use malicious scripts for execution and command and control.
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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 = "eql"
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license = "Elastic License v2"
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name = "Apple Script Execution followed by Network Connection"
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references = [
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"https://developer.apple.com/library/archive/documentation/LanguagesUtilities/Conceptual/MacAutomationScriptingGuide/index.html",
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"https://www.iana.org/assignments/iana-ipv4-special-registry/iana-ipv4-special-registry.xhtml",
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]
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risk_score = 47
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rule_id = "47f76567-d58a-4fed-b32b-21f571e28910"
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severity = "medium"
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tags = ["Elastic", "Host", "macOS", "Threat Detection", "Command and Control", "Execution"]
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type = "eql"
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query = '''
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sequence by host.id, process.entity_id with maxspan=30s
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[process where event.type == "start" and process.name == "osascript"]
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[network where event.type != "end" and process.name == "osascript" and destination.ip != "::1" and
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not cidrmatch(destination.ip,
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"10.0.0.0/8", "127.0.0.0/8", "169.254.0.0/16", "172.16.0.0/12", "192.0.0.0/24", "192.0.0.0/29", "192.0.0.8/32",
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"192.0.0.9/32", "192.0.0.10/32", "192.0.0.170/32", "192.0.0.171/32", "192.0.2.0/24", "192.31.196.0/24",
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"192.52.193.0/24", "192.168.0.0/16", "192.88.99.0/24", "224.0.0.0/4", "100.64.0.0/10", "192.175.48.0/24",
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"198.18.0.0/15", "198.51.100.0/24", "203.0.113.0/24", "240.0.0.0/4", "::1", "FE80::/10", "FF00::/8")]
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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.technique.subtechnique]]
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id = "T1059.002"
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name = "AppleScript"
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reference = "https://attack.mitre.org/techniques/T1059/002/"
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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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[[rule.threat]]
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framework = "MITRE ATT&CK"
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[[rule.threat.technique]]
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id = "T1105"
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name = "Ingress Tool Transfer"
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reference = "https://attack.mitre.org/techniques/T1105/"
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[rule.threat.tactic]
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id = "TA0011"
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name = "Command and Control"
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reference = "https://attack.mitre.org/tactics/TA0011/"
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