Jonhnathan
f584fb6e31
* [Security Content] Adjust Mitre Att&ck Mappings - Windows Rules * Fix dates * Fix unit test errors * updated tags and fixed branch conflicts updated tags and fixed branch conflicts * description nit * Reverting unintended changes * Update initial_access_suspicious_ms_office_child_process.toml --------- Co-authored-by: imays11 <59296946+imays11@users.noreply.github.com>
61 lines
2.2 KiB
TOML
61 lines
2.2 KiB
TOML
[metadata]
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creation_date = "2023/08/25"
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integration = ["endpoint"]
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maturity = "production"
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min_stack_comments = "New fields added: required_fields, related_integrations, setup"
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min_stack_version = "8.3.0"
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updated_date = "2023/10/09"
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bypass_bbr_timing = true
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[rule]
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author = ["Elastic"]
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description = """
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Identifies the attempt to disable Network-Level Authentication (NLA) via registry modification. Network Level Authentication (NLA) is a feature on Windows
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that provides an extra layer of security for Remote Desktop (RDP) connections, as it requires users to authenticate
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before allowing a full RDP session. Attackers can disable NLA to enable persistence methods that require access to the
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Windows sign-in screen without authenticating, such as Accessibility Features persistence methods, like Sticky Keys.
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"""
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from = "now-9m"
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index = ["logs-endpoint.events.*", "endgame-*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Network-Level Authentication (NLA) Disabled"
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references = [
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"https://www.microsoft.com/en-us/security/blog/2023/08/24/flax-typhoon-using-legitimate-software-to-quietly-access-taiwanese-organizations/",
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]
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risk_score = 21
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rule_id = "db65f5ba-d1ef-4944-b9e8-7e51060c2b42"
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severity = "low"
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tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Defense Evasion", "Data Source: Elastic Defend", "Data Source: Elastic Endgame", "Rule Type: BBR"]
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timestamp_override = "event.ingested"
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building_block_type = "default"
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type = "eql"
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query = '''
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registry where host.os.type == "windows" and event.action != "deletion" and
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registry.path :
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("HKLM\\SYSTEM\\ControlSet*\\Control\\Terminal Server\\WinStations\\RDP-Tcp\\UserAuthentication",
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"\\REGISTRY\\MACHINE\\SYSTEM\\*ControlSet*\\Control\\Terminal Server\\WinStations\\RDP-Tcp\\UserAuthentication" ) and
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registry.data.strings : "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 = "T1112"
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name = "Modify Registry"
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reference = "https://attack.mitre.org/techniques/T1112/"
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[[rule.threat.technique]]
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id = "T1562"
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name = "Impair Defenses"
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reference = "https://attack.mitre.org/techniques/T1562/"
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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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