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)
64 lines
2.4 KiB
TOML
64 lines
2.4 KiB
TOML
[metadata]
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creation_date = "2021/02/01"
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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 creation or modification of a local trusted root certificate in Windows. The install of a malicious root
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certificate would allow an attacker the ability to masquerade malicious files as valid signed components from any entity
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(e.g. Microsoft). It could also allow an attacker to decrypt SSL traffic.
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"""
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false_positives = ["Certain applications may install root certificates for the purpose of inspecting SSL traffic."]
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from = "now-9m"
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index = ["winlogbeat-*", "logs-endpoint.events.*", "logs-windows.*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Creation or Modification of Root Certificate"
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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://posts.specterops.io/code-signing-certificate-cloning-attacks-and-defenses-6f98657fc6ec",
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"https://www.ired.team/offensive-security/persistence/t1130-install-root-certificate",
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]
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risk_score = 21
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rule_id = "203ab79b-239b-4aa5-8e54-fc50623ee8e4"
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severity = "low"
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tags = ["Elastic", "Host", "Windows", "Threat Detection", "Defense Evasion"]
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timestamp_override = "event.ingested"
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type = "eql"
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query = '''
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registry where event.type in ("creation", "change") and
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registry.path :
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(
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"HKLM\\Software\\Microsoft\\SystemCertificates\\Root\\Certificates\\*\\Blob",
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"HKLM\\Software\\Microsoft\\SystemCertificates\\AuthRoot\\Certificates\\*\\Blob",
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"HKLM\\Software\\Policies\\Microsoft\\SystemCertificates\\Root\\Certificates\\*\\Blob",
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"HKLM\\Software\\Policies\\Microsoft\\SystemCertificates\\AuthRoot\\Certificates\\*\\Blob"
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)
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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 = "T1553"
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name = "Subvert Trust Controls"
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reference = "https://attack.mitre.org/techniques/T1553/"
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[[rule.threat.technique.subtechnique]]
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id = "T1553.004"
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name = "Install Root Certificate"
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reference = "https://attack.mitre.org/techniques/T1553/004/"
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[rule.threat.tactic]
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id = "TA0005"
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name = "Defense Evasion"
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reference = "https://attack.mitre.org/tactics/TA0005/"
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