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