mirror of
https://github.com/splunk/security_content
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Bhavin Patel
77 lines
2.9 KiB
YAML
77 lines
2.9 KiB
YAML
name: Windows System Shutdown CommandLine
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id: 4fee57b8-d825-4bf3-9ea8-bf405cdb614c
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version: 1
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date: '2022-07-27'
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author: Teoderick Contreras, Splunk
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type: Anomaly
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datamodel:
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- Endpoint
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description: The following analytic identifies Windows commandline to shutdown a windows host machine.
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This technique was seen in several APT, RAT like dcrat and other commodity malware to shutdown the machine to add more impact,
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interrupt access, aid destruction of the system like wiping disk or inhibit system recovery.
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This TTP is a good pivot to check why application trigger this commandline which is not so common way to shutdown a machine.
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search: '| tstats `security_content_summariesonly` values(Processes.process) as process min(_time) as firstTime max(_time) as lastTime from datamodel=Endpoint.Processes
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where (Processes.process_name = shutdown.exe OR Processes.original_file_name = shutdown.exe) Processes.process="*shutdown*" Processes.process="* /s*" Processes.process="* /t*"
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by Processes.dest Processes.user Processes.parent_process Processes.process_name Processes.original_file_name Processes.process Processes.process_id Processes.parent_process_id
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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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| `windows_system_shutdown_commandline_filter`'
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how_to_implement: To successfully implement this search you need to be ingesting information
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on process that include the name of the process responsible for the changes from
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your endpoints into the `Endpoint` datamodel in the `Processes` node. In addition,
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confirm the latest CIM App 4.20 or higher is installed and the latest TA for the
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endpoint product.
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known_false_positives: Administrator may execute this commandline to trigger shutdown or restart the host machine.
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references:
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- https://attack.mitre.org/techniques/T1529/
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- https://www.mandiant.com/resources/analyzing-dark-crystal-rat-backdoor
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tags:
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analytic_story:
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- DarkCrystal RAT
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asset_type: Endpoint
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cis20:
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- CIS 3
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- CIS 5
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- CIS 16
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confidence: 70
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context:
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- Source:Endpoint
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- Stage:Execution
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dataset:
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- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/malware/dcrat/shutdown_commandline/sysmon.log
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impact: 70
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kill_chain_phases:
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- Exploitation
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message: Process $process_name$ seen to execute shutdown via commandline on $dest$
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mitre_attack_id:
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- T1529
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nist:
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- DE.CM
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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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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.dest
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- Processes.user
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- Processes.parent_process_name
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- Processes.parent_process
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- Processes.original_file_name
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- Processes.process_name
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- Processes.process
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- Processes.process_id
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- Processes.parent_process_path
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- Processes.process_path
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- Processes.parent_process_id
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risk_score: 49
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security_domain: endpoint
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supported_tas:
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- Splunk_TA_microsoft_sysmon
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