mirror of
https://github.com/splunk/security_content
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divious1
108 lines
3.4 KiB
YAML
108 lines
3.4 KiB
YAML
asset_type: Endpoint
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confidence: medium
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creation_date: '2018-10-23'
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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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- Sysmon
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- Tanium
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- Ziften
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description: This search looks for scripts launched via WMI.
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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, process
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rule_description: This search looks for scrcons.exe, which indicates that
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a script was launched via WMI.
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rule_title: Script execution via WMI 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: 70
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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(Processes.process) as process
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min(_time) as firstTime max(_time) as lastTime FROM datamodel=Endpoint.Processes
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where Processes.process_name = "scrcons.exe" by Processes.user Processes.dest
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Processes.process_name | `drop_dm_object_name("Processes")` | `security_content_ctime(firstTime)`|
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`security_content_ctime(lastTime)`'
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suppress:
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suppress_fields: dest,process
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suppress_period: 28800s
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eli5: Attackers are increasingly abusing Windows Management Infrastructure for stealth,
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persistence, lateral movement, or just to leverage its functionality. This search
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looks for scripts launched via WMI, either remotely or locally, by looking for the
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execution of scrcons.exe, which is the scripting host used by WMI, similar to wscript
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or cscript.
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entities:
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- dest
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how_to_implement: You must be ingesting endpoint data that tracks process activity,
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including parent-child relationships from your endpoints to populate the Endpoint
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data model in the Processes node. The command-line arguments are mapped to the "process"
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field in the Endpoint data model.
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id: aa73f80d-d728-4077-b226-81ea0c8be589
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investigations:
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- id: 155e0571-7db6-42f2-aa62-9a3a4cf35c94
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name: Get Sysmon WMI Activity for Host
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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: 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: Although unlikely, administrators may use wmi to launch scripts
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for legitimate purposes.
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maintainers:
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- company: Splunk
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email: rvaldez@splunk.com
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name: Rico Valdez
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mappings:
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cis20:
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- CIS 3
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- CIS 5
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kill_chain_phases:
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- Actions on Objectives
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mitre_attack:
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- Execution
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- Windows Management Instrumentation
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nist:
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- PR.PT
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- PR.AT
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- PR.AC
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- PR.IP
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modification_date: '2019-03-01'
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name: Script Execution via WMI
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original_authors:
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- company: Splunk
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email: rvaldez@splunk.com
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name: Rico Valdez
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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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