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)
67 lines
2.5 KiB
TOML
67 lines
2.5 KiB
TOML
[metadata]
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creation_date = "2020/12/21"
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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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Identifies the execution of a Chromium based browser with the debugging process argument, which may indicate an attempt
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to steal authentication cookies. An adversary may steal web application or service session cookies and use them to gain
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access web applications or Internet services as an authenticated user without needing credentials.
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"""
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false_positives = ["Developers performing browsers plugin or extension debugging."]
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from = "now-9m"
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index = ["auditbeat-*", "winlogbeat-*", "logs-endpoint.events.*", "logs-windows.*"]
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language = "eql"
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license = "Elastic License v2"
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max_signals = 33
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name = "Potential Cookies Theft via Browser Debugging"
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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://github.com/defaultnamehere/cookie_crimes",
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"https://embracethered.com/blog/posts/2020/cookie-crimes-on-mirosoft-edge/",
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"https://github.com/rapid7/metasploit-framework/blob/master/documentation/modules/post/multi/gather/chrome_cookies.md",
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"https://posts.specterops.io/hands-in-the-cookie-jar-dumping-cookies-with-chromiums-remote-debugger-port-34c4f468844e",
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]
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risk_score = 47
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rule_id = "027ff9ea-85e7-42e3-99d2-bbb7069e02eb"
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severity = "medium"
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tags = ["Elastic", "Host", "Linux", "Windows", "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", "info") and
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process.name in (
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"Microsoft Edge",
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"chrome.exe",
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"Google Chrome",
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"google-chrome-stable",
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"google-chrome-beta",
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"google-chrome",
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"msedge.exe") and
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process.args : ("--remote-debugging-port=*",
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"--remote-debugging-targets=*",
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"--remote-debugging-pipe=*") and
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process.args : "--user-data-dir=*" and not process.args:"--remote-debugging-port=0"
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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 = "T1539"
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name = "Steal Web Session Cookie"
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reference = "https://attack.mitre.org/techniques/T1539/"
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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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