Andrew Pease
8c4df09542
* initial commit * extra lint extra test * Update rules/macos/execution_curl_spawned_from_installer_package.toml Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com> * Update rules/macos/execution_curl_spawned_from_installer_package.toml Co-authored-by: Brent Murphy <56412096+bm11100@users.noreply.github.com> * Update rules/macos/execution_curl_spawned_from_installer_package.toml Co-authored-by: Brent Murphy <56412096+bm11100@users.noreply.github.com> * Update rules/macos/execution_curl_spawned_from_installer_package.toml Co-authored-by: Derek Ditch <dcode@users.noreply.github.com> * moved to EQL * Update rules/macos/execution_installer_spawned_network_event.toml Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com> Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com> Co-authored-by: Brent Murphy <56412096+bm11100@users.noreply.github.com> Co-authored-by: Derek Ditch <dcode@users.noreply.github.com>
82 lines
2.3 KiB
TOML
82 lines
2.3 KiB
TOML
[metadata]
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creation_date = "2021/02/23"
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maturity = "production"
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updated_date = "2021/02/23"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies when the built in macOS Installer program generates a network event after attempting to install a .pkg file.
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This activity has been observed being leveraged by malware.
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"""
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false_positives = [
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"""
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Custom organization-specific macOS packages that use .pkg files to run cURL could trigger this rule. If known
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behavior is causing false positives, it can be excluded from the rule.
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""",
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]
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from = "now-9m"
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index = ["logs-endpoint.events.*"]
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language = "eql"
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license = "Elastic License"
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name = "macOS Installer Spawns Network Event"
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references = ["https://redcanary.com/blog/clipping-silver-sparrows-wings"]
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risk_score = 47
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rule_id = "99239e7d-b0d4-46e3-8609-acafcf99f68c"
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severity = "medium"
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tags = ["Elastic", "Host", "macOS", "Threat Detection", "Execution"]
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timestamp_override = "event.ingested"
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type = "eql"
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query = '''
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sequence by process.entity_id with maxspan=1m
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[ process where event.type == "start" and host.os.family == "macos" and
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process.parent.executable in ("/usr/sbin/installer", "/System/Library/CoreServices/Installer.app/Contents/MacOS/Installer") ]
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[ network where not cidrmatch(destination.ip,
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"192.168.0.0/16",
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"10.0.0.0/8",
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"172.16.0.0/12",
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"224.0.0.0/8",
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"127.0.0.0/8",
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"169.254.0.0/16",
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"::1",
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"FE80::/10",
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"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 = "T1059.007"
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name = "JavaScript/JScript"
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reference = "https://attack.mitre.org/techniques/T1059/007/"
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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 = "T1071"
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name = "Application Layer Protocol"
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reference = "https://attack.mitre.org/techniques/T1071/"
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[[rule.threat.technique.subtechnique]]
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id = "T1071.001"
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name = "Web Protocols"
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reference = "https://attack.mitre.org/techniques/T1071/001/"
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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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