Windows Network Enumerationedit

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

Rule type: eql

Rule indices:

  • winlogbeat-*
  • logs-windows.*

Severity: medium

Risk score: 47

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References: None


  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Discovery

Version: 5

Rule authors:

  • Elastic

Rule license: Elastic License v2

Investigation guideedit

## Config

If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.

Rule queryedit

process where event.type in ("start", "process_started") and
  (( : "net.exe" or == "net.exe") or
   (( : "net1.exe" or == "net1.exe") and
       not : "net.exe")) and
  (process.args : "view" or (process.args : "time" and process.args : "\\\\*"))

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