mirror of
https://github.com/splunk/security_content
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divious1
107 lines
3.8 KiB
YAML
107 lines
3.8 KiB
YAML
asset_type: Endpoint
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confidence: medium
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creation_date: '2017-10-12'
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data_metadata:
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data_models:
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- Endpoint
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data_source:
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- Endpoint Intel
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providing_technologies:
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- Carbon Black Response
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- CrowdStrike Falcon
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- Sysmon
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- Tanium
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- Ziften
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description: The search looks for modifications to registry keys that control the
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enforcement of Windows User Account Control (UAC).
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detect:
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splunk:
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correlation_rule:
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notable:
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nes_fields: dest, user, registry_path
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rule_description: The registry key SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\LocalAccountTokenFilterPolicy
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was modified. This registry key is associated with disabling remote UAC
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on Windows.
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rule_title: Registry Key Associated With Disabling Remote UAC Modified on
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$dest$
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risk:
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risk_object: dest
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risk_object_type:
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- system
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risk_score: 30
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schedule:
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cron_schedule: 0 * * * *
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earliest_time: -70m@m
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latest_time: -10m@m
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search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) as
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lastTime FROM datamodel=Endpoint.Registry where Registry.registry_path="*Windows\\CurrentVersion\\Policies\\System\\LocalAccountTokenFilterPolicy"
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by Registry.dest, Registry.registry_key_name Registry.status Registry.user
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Registry.registry_path Registry.action | `drop_dm_object_name(Registry)`'
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suppress:
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suppress_fields: dest, user, registry_path
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suppress_period: 14400s
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eli5: This search checks to see if the registry key SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\LocalAccountTokenFilterPolicy
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was modified. This registry key can be used to disable remote User Account Control. The
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search returns the count, the first time activity was seen, last time activity was
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seen, the registry path that was modified, the host where the modification took
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place and the user that performed the modification.
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entities:
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- dest
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how_to_implement: To successfully implement this search, you must be ingesting data
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that records registry activity from your hosts to populate the endpoint data model
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in the registry node. This is typically populated via endpoint detection-and-response
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products, such as Carbon Black, or via other endpoint data sources, such as Sysmon.
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The data used for this search is typically generated via logs that report registry
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modifications.
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id: bbc644bc-37df-4e1a-9c88-ec9a53e2038c
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investigations:
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- id: fecf2918-670d-4f1c-872b-3d7317a41xf9
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name: Get Registry Activities
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type: splunk
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- id: bc91a8cf-35e7-4bb2-8140-e756cc06fd76
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name: Get Authentication Logs For Endpoint
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type: splunk
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- id: fdcfb369-1725-4c24-824a-22972d7f0d55
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name: Get Risk Modifiers For User
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type: splunk
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- id: 3d6c3213-5fff-4a1e-b57d-b24c262171e7
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name: Get Notable History
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type: splunk
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- id: f3fb4d1b-5f33-4b01-b541-c7af9534c242
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name: Get Notable Info
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type: splunk
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- id: fdcfb369-1725-4c24-824a-22972d7f0d65
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name: Get Risk Modifiers For Endpoint
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type: splunk
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- id: bc91a8cf-35e7-4bb2-8140-e756cc06fd74
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name: Get User Information from Identity Table
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type: splunk
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known_false_positives: This registry key may be modified via administrators to implement
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a change in system policy. This type of change should be a very rare occurrence.
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maintainers:
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- company: Splunk
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email: davidd@splunk.com
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name: David Dorsey
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mappings:
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cis20:
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- CIS 8
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kill_chain_phases:
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- Actions on Objectives
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mitre_attack:
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- Defense Evasion
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- Modify Registry
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nist:
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- PR.PT
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- DE.CM
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modification_date: '2018-12-03'
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name: Disabling Remote User Account Control
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original_authors:
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- company: Splunk
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email: davidd@splunk.com
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name: David Dorsey
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references: []
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security_domain: endpoint
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spec_version: 2
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type: splunk
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version: '2.0'
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