mirror of
https://github.com/splunk/security_content
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Bhavin Patel
83 lines
3.5 KiB
YAML
83 lines
3.5 KiB
YAML
name: Remote WMI Command Attempt
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id: 272df6de-61f1-4784-877c-1fbc3e2d0838
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version: 5
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date: '2024-05-17'
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author: Rico Valdez, Michael Haag, 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 `wmic.exe` with the `node`
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switch, indicating an attempt to spawn a local or remote process. This detection
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leverages data from Endpoint Detection and Response (EDR) agents, focusing on process
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creation events and command-line arguments. This activity is significant as it may
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indicate lateral movement or remote code execution attempts by an attacker. If confirmed
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malicious, the attacker could gain remote control over the targeted system, execute
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arbitrary commands, and potentially escalate privileges or persist within the environment.
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data_source:
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- Sysmon EventID 1
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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 `process_wmic` Processes.process=*node*
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by Processes.dest Processes.user Processes.parent_process Processes.process_name
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Processes.process Processes.process_id Processes.parent_process_id | `drop_dm_object_name(Processes)`
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| `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `remote_wmi_command_attempt_filter`'
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how_to_implement: The detection is based on data that originates from Endpoint Detection
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and Response (EDR) agents. These agents are designed to provide security-related
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telemetry from the endpoints where the agent is installed. To implement this search,
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you must ingest logs that contain the process GUID, process name, and parent process.
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Additionally, you must ingest complete command-line executions. These logs must
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be processed using the appropriate Splunk Technology Add-ons that are specific to
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the EDR product. The logs must also be mapped to the `Processes` node of the `Endpoint`
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data model. Use the Splunk Common Information Model (CIM) to normalize the field
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names and speed up the data modeling process.
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known_false_positives: Administrators may use this legitimately to gather info from
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remote systems. Filter as needed.
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references:
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- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1047/T1047.yaml
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- https://www.microsoft.com/en-us/security/blog/2023/05/24/volt-typhoon-targets-us-critical-infrastructure-with-living-off-the-land-techniques/
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- https://thedfirreport.com/2023/05/22/icedid-macro-ends-in-nokoyawa-ransomware/
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tags:
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analytic_story:
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- Graceful Wipe Out Attack
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- Volt Typhoon
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- Living Off The Land
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- IcedID
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- Suspicious WMI Use
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- CISA AA23-347A
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asset_type: Endpoint
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confidence: 60
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impact: 60
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message: A wmic.exe process $process$ contain node commandline $process$ in host
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$dest$
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mitre_attack_id:
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- T1047
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observable:
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- name: dest
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type: Hostname
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role:
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- Victim
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- name: user
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type: User
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role:
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- Victim
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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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required_fields:
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- _time
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- Processes.user
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- Processes.process_name
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- Processes.parent_process_name
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- Processes.dest
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- Processes.parent_process
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- Processes.parent_process_id
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- Processes.process_id
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risk_score: 36
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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:
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https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1047/atomic_red_team/windows-sysmon.log
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source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
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sourcetype: xmlwineventlog
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