Potential Shell via Web Serveredit

Identifies suspicious commands executed via a web server, which may suggest a vulnerability and remote shell access.

Rule type: query

Rule indices:

  • auditbeat-*

Severity: medium

Risk score: 47

Runs every: 5 minutes

Searches indices from: now-6m (Date Math format, see also Additional look-back time)

Maximum signals per execution: 100



  • Elastic
  • Linux

Version: 3 (version history)

Added (Elastic Stack release): 7.6.0

Last modified (Elastic Stack release): 7.8.0

Potential false positivesedit

Network monitoring or management products may have a web server component that runs shell commands as part of normal behavior.

Rule queryedit

process.name:(bash or dash) and user.name:(apache or nginx or www or
"www-data") and event.action:executed

Threat mappingedit


Rule version historyedit

Version 3 (7.8.0 release)

Updated query, changed from:

process.name:bash and user.name:(apache or www or www-data) and
Version 2 (7.6.1 release)

Updated query, changed from:

process.name: bash and user.name: (apache or www or "wwww-data") and