Elastic medium stable eql

Windows Network Enumeration

Identifies attempts to enumerate hosts in a network using the built-in Windows net.exe tool.

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Detection Logic

process where host.os.type == "windows" and event.type == "start" and
  ((process.name : "net.exe" or process.pe.original_file_name == "net.exe") or
   ((process.name : "net1.exe" or process.pe.original_file_name == "net1.exe") and
       not process.parent.name : "net.exe")) and
  (process.args : "view" or (process.args : "time" and process.args : "\\\\*")) and
  not process.command_line : "net  view \\\\localhost "


  /* expand when ancestry is available
  and not descendant of [process where event.type == "start" and process.name : "cmd.exe" and
                           ((process.parent.name : "userinit.exe") or
                            (process.parent.name : "gpscript.exe") or
                            (process.parent.name : "explorer.exe" and
                               process.args : "C:\\*\\Start Menu\\Programs\\Startup\\*.bat*"))]
  */

Field Validations

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