IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Potential Shell via Web Server
editPotential Shell via Web Server
editIdentifies 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: 5 minutes
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: 9 (version history)
Added (Elastic Stack release): 7.6.0
Last modified (Elastic Stack release): 7.12.0
Rule authors: Elastic
Rule license: Elastic License v2
Potential false positives
editNetwork monitoring or management products may have a web server component that runs shell commands as part of normal behavior.
Rule query
editevent.category:process and event.type:(start or process_started) and process.name:(bash or dash) and user.name:(apache or nginx or www or "www-data")
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Persistence
- ID: TA0003
- Reference URL: https://attack.mitre.org/tactics/TA0003/
-
Technique:
- Name: Server Software Component
- ID: T1505
- Reference URL: https://attack.mitre.org/techniques/T1505/
Rule version history
edit- Version 9 (7.12.0 release)
-
- Formatting only
- Version 8 (7.11.2 release)
-
- Formatting only
- Version 7 (7.11.0 release)
-
- Formatting only
- Version 6 (7.10.0 release)
-
- Formatting only
- Version 5 (7.9.1 release)
-
- Formatting only
- Version 4 (7.9.0 release)
-
-
Updated query, changed from:
process.name:(bash or dash) and user.name:(apache or nginx or www or "www-data") and event.action:executed
-
- Version 3 (7.8.0 release)
-
-
Updated query, changed from:
process.name:bash and user.name:(apache or www or www-data) and event.action:executed
-
- Version 2 (7.6.1 release)
-
-
Updated query, changed from:
process.name: bash and user.name: (apache or www or "wwww-data") and event.action:executed
-