mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
Eric McGinnis
63 lines
4.2 KiB
YAML
63 lines
4.2 KiB
YAML
name: Linux Gdrive Binary Activity
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id: a42f8029-5472-4c33-8943-bb17bb07466a
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version: 5
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creation_date: '2022-04-26'
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modification_date: '2026-05-13'
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author: Raven Tait, Splunk
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status: production
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type: TTP
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description: The following analytic detects the execution of the 'gdrive' tool on a Linux 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.
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data_source:
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- Sysmon for Linux EventID 1
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search: |-
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| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) as lastTime FROM datamodel=Endpoint.Processes
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WHERE Processes.process_name="gdrive" Processes.process IN ("* download *", "* upload *", "* list*", "* update *", "* sync *", "* share *", "* account add*", "* drives *", "* files *")
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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
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Processes.process_hash Processes.process_id Processes.process_integrity_level
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Processes.process_name Processes.process_path Processes.user
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Processes.user_id Processes.vendor_product
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| `drop_dm_object_name(Processes)`
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| `security_content_ctime(firstTime)`
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| `security_content_ctime(lastTime)`
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| `linux_gdrive_binary_activity_filter`
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how_to_implement: 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.
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known_false_positives: Administrator or network operator can use this application for automation purposes. Please update the filter macros to remove false positives.
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references:
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- https://cloud.google.com/blog/topics/threat-intelligence/uncovering-unc3886-espionage-operations
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drilldown_searches:
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- name: View the detection results for - "$dest$"
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search: '%original_detection_search% | search dest = "$dest$"'
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earliest_offset: $info_min_time$
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latest_offset: $info_max_time$
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- name: View risk events for the last 7 days for - "$dest$"
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search: '| from datamodel Risk.All_Risk | search normalized_risk_object IN ("$dest$") | stats count min(_time) as firstTime max(_time) as lastTime values(search_name) as "Search Name" values(risk_message) as "Risk Message" values(analyticstories) as "Analytic Stories" values(annotations._all) as "Annotations" values(annotations.mitre_attack.mitre_tactic) as "ATT&CK Tactics" by normalized_risk_object | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`'
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earliest_offset: 7d
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latest_offset: "0"
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finding:
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title: An instance of $process_name$ was identified attempting to interact with Google Drive on endpoint $dest$ by $user$.
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entity:
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field: dest
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type: system
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score: 50
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analytic_story:
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- China-Nexus Threat Activity
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asset_type: Endpoint
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mitre_attack_id:
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- T1567
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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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category: endpoint
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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/T1567/gdrive/gdrive_linux.log
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sourcetype: sysmon:linux
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source: Syslog:Linux-Sysmon/Operational
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test_type: unit
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