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70 lines
2.4 KiB
YAML
70 lines
2.4 KiB
YAML
name: CMD Carry Out String Command Parameter
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id: 54a6ed00-3256-11ec-b031-acde48001122
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version: 1
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date: '2021-10-21'
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author: Teoderick Contreras, Splunk, Bhavin Patel, Splunk
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type: Hunting
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datamodel:
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- Endpoint
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description: This search looks for command-line arguments where `cmd.exe /c` is used
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to execute a program. This technique is commonly seen in adversaries and malware
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to execute batch command using different shell like powershell or different process
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other than cmd.exe. This is a good hunting query for suspicious commandline made
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by a script or relative process execute it.
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search: '| tstats `security_content_summariesonly` min(_time) as firstTime max(_time)
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as lastTime from datamodel=Endpoint.Processes where `process_cmd` AND Processes.process="*
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/c *" by Processes.dest Processes.user Processes.parent_process Processes.process_name
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Processes.original_file_name Processes.process Processes.process_id Processes.parent_process_id
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| `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`
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| `cmd_carry_out_string_command_parameter_filter`'
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how_to_implement: To successfully implement this search, you need to be ingesting
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logs with the process name, parent process, and command-line executions from your
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endpoints. If you are using Sysmon, you must have at least version 6.0.4 of the
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Sysmon TA.
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known_false_positives: unknown
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references:
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- https://thedfirreport.com/2021/10/18/icedid-to-xinglocker-ransomware-in-24-hours/
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tags:
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analytic_story:
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- IcedID
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automated_detection_testing: passed
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confidence: 50
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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/icedid/cmd_carry_str_param/sysmon.log
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impact: 60
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kill_chain_phases:
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- Exploitation
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message: $process_name$ with commandline $process$ in $dest$
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mitre_attack_id:
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- T1059.003
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- T1059
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observable:
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- name: dest
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type: Endpoint
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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.parent_process_name
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- Processes.parent_process
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- Processes.process_name
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- Processes.process_id
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- Processes.process
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- Processes.dest
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- Processes.user
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- Processes.process_id
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- Processes.parent_process_id
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risk_score: 30
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security_domain: endpoint
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