Mika Ayenson
82 lines
2.7 KiB
TOML
82 lines
2.7 KiB
TOML
[metadata]
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creation_date = "2020/08/14"
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maturity = "production"
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updated_date = "2022/07/13"
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[rule]
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author = ["Elastic"]
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description = """
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Adversaries may collect the keychain storage data from a system to acquire credentials. Keychains are the built-in way
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for macOS to keep track of users' passwords and credentials for many services and features such as WiFi passwords,
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websites, secure notes and certificates.
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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 = "Access to Keychain Credentials Directories"
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note = """## Setup
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If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
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"""
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references = [
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"https://objective-see.com/blog/blog_0x25.html",
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"https://securelist.com/calisto-trojan-for-macos/86543/",
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]
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risk_score = 73
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rule_id = "96e90768-c3b7-4df6-b5d9-6237f8bc36a8"
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severity = "high"
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tags = ["Elastic", "Host", "macOS", "Threat Detection", "Credential Access"]
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timestamp_override = "event.ingested"
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type = "eql"
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query = '''
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process where event.type in ("start", "process_started") and
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process.args :
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(
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"/Users/*/Library/Keychains/*",
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"/Library/Keychains/*",
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"/Network/Library/Keychains/*",
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"System.keychain",
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"login.keychain-db",
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"login.keychain"
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) and
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not process.args : ("find-certificate",
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"add-trusted-cert",
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"set-keychain-settings",
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"delete-certificate",
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"/Users/*/Library/Keychains/openvpn.keychain-db",
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"show-keychain-info",
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"lock-keychain",
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"set-key-partition-list",
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"import",
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"find-identity") and
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not process.parent.executable :
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(
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"/Applications/OpenVPN Connect/OpenVPN Connect.app/Contents/MacOS/OpenVPN Connect",
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"/Applications/Microsoft Defender.app/Contents/MacOS/wdavdaemon_enterprise.app/Contents/MacOS/wdavdaemon_enterprise",
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"/opt/jc/bin/jumpcloud-agent"
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) and
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not process.executable : "/opt/jc/bin/jumpcloud-agent"
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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 = "T1555"
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name = "Credentials from Password Stores"
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reference = "https://attack.mitre.org/techniques/T1555/"
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[[rule.threat.technique.subtechnique]]
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id = "T1555.001"
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name = "Keychain"
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reference = "https://attack.mitre.org/techniques/T1555/001/"
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[rule.threat.tactic]
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id = "TA0006"
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name = "Credential Access"
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reference = "https://attack.mitre.org/tactics/TA0006/"
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