mirror of
https://github.com/splunk/security_content
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divious1
113 lines
4.0 KiB
YAML
113 lines
4.0 KiB
YAML
asset_type: Endpoint
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confidence: medium
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creation_date: '2018-05-31'
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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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description: This search monitors for remote modifications to registry keys.
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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
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rule_description: A registry key was modified remotely using the machine $dest$
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by $user$.
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rule_title: Remote Registry Key Modification detection on $dest$
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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 values(Registry.registry_key_name) as
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registry_key_name values(Registry.registry_path) as registry_path min(_time)
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as firstTime max(_time) as lastTime FROM datamodel=Endpoint.Registry where Registry.registry_path="\\\\*" by
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Registry.dest , Registry.status, Registry.user | `security_content_ctime(lastTime)` | `security_content_ctime(firstTime)`
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| `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 looks for modifications made to the Windows registry from remote
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locations using reg.exe—a tool used to create/update/delete/modify Windows
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registry keys. It is accomplished through specifying the machine names in the registry
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path, by entering double backslashes, followed by a computer name. In this search,
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we look for registry changes where the registry path contains the name of a remote
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computer. The search returns the number of times the remote server has been accessed,
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the first and last times the activity occurred, the name of the modified registry
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path, the host on which the modification took place, and the name of the user that
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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 populate the `Endpoint`
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data model. This is typically populated via endpoint detection-and-response products,
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such as Carbon Black, or endpoint data sources, such as Sysmon. The data used for
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this search is typically generated via logs that report reads and writes to the
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registry.
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id: c9f4b923-f8af-4155-b697-1354f5dcbc5e
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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: fecf2918-670d-4f1c-872b-3d7317a41bf9
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name: Get Parent Process Info
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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: bc91a8cf-35e7-4bb2-8140-e756cc06fd71
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name: Get Process Info
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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 technique may be legitimately used by administrators to
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modify remote registries, so it's important to filter these events out.
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maintainers:
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- company: Splunk
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email: bpatel@splunk.com
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name: Bhavin Patel
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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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- Persistence
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- Lateral Movement
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nist:
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- PR.PT
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- DE.CM
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modification_date: '2018-05-31'
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name: Remote Registry Key modifications
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original_authors:
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- company: Splunk
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email: bpatel@splunk.com
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name: Bhavin Patel
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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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