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Eric
57 lines
2.8 KiB
YAML
57 lines
2.8 KiB
YAML
name: Headless Browser Usage
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id: 869ba261-c272-47d7-affe-5c0aa85c93d6
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version: 6
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date: '2025-05-02'
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author: Michael Haag, Splunk
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status: production
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type: Hunting
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data_source:
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- Sysmon EventID 1
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- Windows Event Log Security 4688
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- CrowdStrike ProcessRollup2
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description: The following analytic detects the usage of headless browsers within
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an organization. It identifies processes containing the "--headless" and "--disable-gpu"
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command line arguments, which are indicative of headless browsing. This detection
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leverages data from the Endpoint.Processes datamodel to identify such processes.
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Monitoring headless browser usage is significant as these tools can be exploited
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by adversaries for malicious activities like web scraping, automated testing, and
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undetected web interactions. If confirmed malicious, this activity could lead to
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unauthorized data extraction, automated attacks, or other covert operations on web
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applications.
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search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
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as lastTime from datamodel=Endpoint.Processes where (Processes.process="*--headless*"
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AND Processes.process="*--disable-gpu*") by Processes.action Processes.dest Processes.original_file_name
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Processes.parent_process Processes.parent_process_exec Processes.parent_process_guid
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Processes.parent_process_id Processes.parent_process_name Processes.parent_process_path
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Processes.process Processes.process_exec Processes.process_guid Processes.process_hash
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Processes.process_id Processes.process_integrity_level Processes.process_name Processes.process_path
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Processes.user Processes.user_id Processes.vendor_product | `drop_dm_object_name(Processes)`
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| `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`| `headless_browser_usage_filter`'
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how_to_implement: To successfully implement this search you need to be ingesting information
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on process that include the name of the process responsible for the changes from
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your endpoints into the `Endpoint` datamodel in the `Processes` node. In addition,
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confirm the latest CIM App 4.20 or higher is installed and the latest TA for the
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endpoint product.
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known_false_positives: This hunting analytic is meant to assist with baselining and
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understanding headless browsing in use. Filter as needed.
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references:
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- https://cert.gov.ua/article/5702579
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tags:
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analytic_story:
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- Forest Blizzard
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asset_type: Endpoint
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atomic_guid: []
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mitre_attack_id:
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- T1564.003
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product:
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- Splunk Enterprise
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- Splunk Enterprise Security
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- Splunk Cloud
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security_domain: endpoint
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tests:
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- name: True Positive Test
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attack_data:
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- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1185/headlessbrowser/headless_mockbin.log
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source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
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sourcetype: XmlWinEventLog
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