splApache-2.0from splunk/security_content

Detect RClone Command-Line Usage

The following analytic detects the usage of `rclone.exe` with specific command-line arguments indicative of file transfer activities. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on command-line executions and process details. This activity is significant as `rclone.exe` is often used by adversaries for data exfiltration, especially during ransomware attacks. If confirmed malicious, this behavior could lead to unauthorized data transfer, resulting in data breaches and potential loss of sensitive information. Immediate isolation of the affected endpoint and further investigation are recommended.

Quality

FP risk

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Forks

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Rule sourcedetections/endpoint/detect_rclone_command_line_usage.yml

| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
as lastTime from datamodel=Endpoint.Processes where
(Processes.original_file_name="rclone.exe" OR Processes.process_name="rclone.exe")
Processes.process IN (
        "*copy*", "*mega*", "*pcloud*", "*ftp*",
        "*--config*", "*--progress*", "*--no-check-certificate*",
        "*--ignore-existing*", "*--auto-confirm*", "*--transfers*",
        "*--multi-thread-streams*"
        )
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)`
| `detect_rclone_command_line_usage_filter`