Justin Ibarra
eeb8ab7744
* Expand timestamp_override tests
* removed timestamp_override from eql sequence rules
* add config entry for eql rules with beats index and t_o
* add timestamp_override to missing fields
Removed changes from:
- rules/cross-platform/impact_hosts_file_modified.toml
- rules/windows/credential_access_lsass_memdump_file_created.toml
- rules/windows/defense_evasion_adding_the_hidden_file_attribute_with_via_attribexe.toml
- rules/windows/defense_evasion_execution_lolbas_wuauclt.toml
- rules/windows/defense_evasion_suspicious_certutil_commands.toml
- rules/windows/execution_command_shell_started_by_svchost.toml
(selectively cherry picked from commit 6bdfddac8e)
72 lines
2.7 KiB
TOML
72 lines
2.7 KiB
TOML
[metadata]
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creation_date = "2020/01/06"
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maturity = "production"
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updated_date = "2022/03/31"
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[rule]
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author = ["Elastic"]
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description = """
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Adversaries may collect keychain storage data from a system to in order to acquire credentials. Keychains are the
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built-in way for macOS to keep track of users' passwords and credentials for many services and features, including Wi-Fi
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and website passwords, secure notes, certificates, and Kerberos.
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"""
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false_positives = ["Applications for password management."]
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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 = "Keychain Password Retrieval via Command Line"
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note = """## Config
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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://www.netmeister.org/blog/keychain-passwords.html",
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"https://github.com/priyankchheda/chrome_password_grabber/blob/master/chrome.py",
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"https://ss64.com/osx/security.html",
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"https://www.intezer.com/blog/research/operation-electrorat-attacker-creates-fake-companies-to-drain-your-crypto-wallets/",
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]
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risk_score = 73
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rule_id = "9092cd6c-650f-4fa3-8a8a-28256c7489c9"
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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 == "start" and
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process.name : "security" and process.args : "-wa" and process.args : ("find-generic-password", "find-internet-password") and
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process.args : ("Chrome*", "Chromium", "Opera", "Safari*", "Brave", "Microsoft Edge", "Edge", "Firefox*") and
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not process.parent.executable : "/Applications/Keeper Password Manager.app/Contents/Frameworks/Keeper Password Manager Helper*/Contents/MacOS/Keeper Password Manager Helper*"
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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.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 = "T1555.003"
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name = "Credentials from Web Browsers"
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reference = "https://attack.mitre.org/techniques/T1555/003/"
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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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