Techniques
Sample rules
Windows Chromium Process Loaded Extension via Command-Line
- source: splunk
- technicques:
- T1185
Description
The following analytic detects instances where Google Chrome is started with the –load-extension command-line flag, which allows loading unpacked or non-standard extensions. This behavior can indicate attempts to bypass enterprise extension policies, install malicious extensions, or load potentially harmful browser components. Monitoring such activity helps identify unauthorized extension usage, potential malware persistence mechanisms, or policy violations that could compromise browser security.
Detection logic
| tstats `security_content_summariesonly` min(_time) as firstTime max(_time) as lastTime from datamodel=Endpoint.Processes where
Processes.process_name = "Chrome.exe"
Processes.process= "*--load-extension*"
by Processes.action Processes.dest Processes.original_file_name Processes.parent_process
Processes.parent_process_exec Processes.parent_process_guid Processes.parent_process_id
Processes.parent_process_name Processes.parent_process_path Processes.process Processes.process_exec
Processes.process_guid Processes.process_hash Processes.process_id Processes.process_integrity_level
Processes.process_name Processes.process_path Processes.user Processes.user_id Processes.vendor_product
| `drop_dm_object_name(Processes)`
| `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)`
| `windows_chromium_process_loaded_extension_via_command_line_filter`
Windows Chrome Enable Extension Loading via Command-Line
- source: splunk
- technicques:
- T1185
Description
The following analytic detects instances where Google Chrome is started with the –disable-features=DisableLoadExtensionCommandLineSwitch flag, effectively enabling the loading of extensions via the command line. This may indicate attempts to bypass enterprise extension policies, load unauthorized or malicious extensions, or manipulate browser behavior. Monitoring this activity helps identify potential security policy violations, malware persistence techniques, or other suspicious Chrome modifications.
Detection logic
| tstats `security_content_summariesonly` min(_time) as firstTime max(_time) as lastTime
from datamodel=Endpoint.Processes where
Processes.process_name = "Chrome.exe"
Processes.process= "*--disable-features*"
Processes.process= "*DisableLoadExtensionCommandLineSwitch*"
by Processes.action Processes.dest Processes.original_file_name Processes.parent_process
Processes.parent_process_exec Processes.parent_process_guid Processes.parent_process_id
Processes.parent_process_name Processes.parent_process_path Processes.process Processes.process_exec
Processes.process_guid Processes.process_hash Processes.process_id Processes.process_integrity_level
Processes.process_name Processes.process_path Processes.user Processes.user_id Processes.vendor_product
| `drop_dm_object_name(Processes)`
| `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)`
| `windows_chrome_enable_extension_loading_via_command_line_filter`