Potential Shell via Web Server

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

Rule type: query

Rule indices:

  • auditbeat-*
  • logs-endpoint.events.*

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:

Tags:

  • Elastic
  • Host
  • Linux
  • Threat Detection
  • Persistence

Version: 12

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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event.category:process and event.type:(start or process_started) and
process.name:(bash or dash or ash or zsh or "python*" or "perl*" or "php*") and
process.parent.name:("apache" or "nginx" or "www" or "apache2" or "httpd" or "www-data")

Framework: MITRE ATT&CKTM