Windows Gdrive Binary Activity
Description
The following analytic detects the execution of the 'gdrive' tool on a Windows host. This tool allows standard users to perform tasks associated with Google Drive via the command line. This is used by actors to stage tools as well as exfiltrate data. The detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process names and command-line executions. If confirmed malicious, this could lead to compromise of systems or sensitive data being stolen.
Query · spl
| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) as lastTime FROM datamodel=Endpoint.Processes
WHERE (
Processes.process_name="gdrive.exe"
OR
Processes.original_file_name="*gdrive.exe"
)
Processes.process IN ("* download *", "* upload *", "* list*", "* update *", "* sync *", "* share *", "* account add*", "* drives *", "* files *")
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_gdrive_binary_activity_filter`
Implementation guide
The detection is based on data that originates from Endpoint Detection and Response (EDR) agents. These agents are designed to provide security-related telemetry from the endpoints where the agent is installed. To implement this search, you must ingest logs that contain the process GUID, process name, and parent process. Additionally, you must ingest complete command-line executions. These logs must be processed using the appropriate Splunk Technology Add-ons that are specific to the EDR product. The logs must also be mapped to the Processes node of the Endpoint data model. Use the Splunk Common Information Model (CIM) to normalize the field names and speed up the data modeling process.
Known false positives
- Administrator or network operator can use this application for automation purposes. Please update the filter macros to remove false positives.
Analyst notes
Known false positives: Administrator or network operator can use this application for automation purposes. Please update the filter macros to remove false positives.