Windows Suspicious Child Process from Node.js - React2Shell

detection:
  filter_main_cli_git:
    CommandLine|contains: 'git config --local --get remote.origin.url'
  filter_main_cli_mkcert_caroot:
    CommandLine|contains|all:
      - '\mkcert\'
      - ' -CAROOT'
  filter_main_cli_mkcert_install:
    CommandLine|contains|all:
      - '\mkcert\'
      - ' -install '
  filter_main_cli_netstat:
    CommandLine|contains|all:
      - 'netstat -ano | findstr /C:'
      - ' | findstr LISTENING'
  filter_main_default_shell_flag:
    CommandLine|contains: '/d /s /c '
  selection_generic_child_cli_susp_pattern:
    CommandLine|contains:
      - '\net'
      - 'bitsadmin'
      - 'certutil '
      - 'conhost --headless'
      - 'cscript '
      - 'curl'
      - 'ipconfig'
      - 'java'
      - 'lua'
      - 'mshta'
      - 'netsh'
      - 'nslookup '
      - 'perl'
      - 'ping '
      - 'powershell'
      - 'pwsh'
      - 'python'
      - 'reg '
      - 'reg.exe'
      - 'regsvr32'
      - 'ruby'
      - 'rundll32'
      - 'sc.exe'
      - 'systeminfo'
      - 'wget'
      - 'whoami'
      - 'wmic'
      - 'wscript'
  selection_generic_child_img:
    - Image|endswith:
        - '\bash.exe'
        - '\bitsadmin.exe'
        - '\certutil.exe'
        - '\cscript.exe'
        - '\curl.exe'
        - '\ipconfig.exe'
        - '\mshta.exe'
        - '\net.exe'
        - '\net1.exe'
        - '\netsh.exe'
        - '\nslookup.exe'
        - '\OpenConsole.exe'
        - '\perl.exe'
        - '\ping.exe'
        - '\powershell.exe'
        - '\pwsh.exe'
        - '\py.exe'
        - '\python.exe'
        - '\pythonw.exe'
        - '\pyw.exe'
        - '\reg.exe'
        - '\regsvr32.exe'
        - '\rundll32.exe'
        - '\sc.exe'
        - '\sh.exe'
        - '\systeminfo.exe'
        - '\wget.exe'
        - '\whoami.exe'
        - '\wmic.exe'
        - '\wscript.exe'
        - '\wt.exe'
    - Image|contains: '\python'
  selection_parent:
    ParentCommandLine|contains:
      - '--experimental-https'
      - '--experimental-next-config-strip-types'
      - '\node_modules\next'
      - 'next dev'
      - 'next start'
      - 'next" start'
      - 'node_modules\\.bin\\\\..\\next'
      - 'react-scripts start'
      - 'start-server.js'
    ParentImage|endswith: '\node.exe'
  selection_specific_cli:
    CommandLine|contains: '/d /s /c '
  selection_specific_cmd:
    Image|endswith: '\cmd.exe'
  condition: selection_parent and ( 1 of selection_generic_* or (selection_specific_cmd and not filter_main_default_shell_flag) or (all of selection_specific_* and not 1 of filter_main_cli_*) )

The rule’s detection, its selections and fields in order of name. The whole rule, with its references and false positives, is on SigmaHQ, by Swachchhanda Shrawan Poudel (Nextron Systems), Nasreddine Bencherchali, under the Detection Rule License 1.1. CmdID evaluates it on a command line alone: a test on what a command line cannot show, such as the parent process or the user, is not met.

None of the everyday examples and documented commands on CmdID’s program pages trips it. To see whether a command line does, paste it into CmdID.