IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Potential Remote Code Execution via Web Serveredit
Identifies suspicious commands executed via a web server, which may suggest a vulnerability and remote shell access.
Rule type: eql
Rule indices:
- logs-endpoint.events.*
- endgame-*
Severity: high
Risk score: 73
Runs every: 5m
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
Tags:
- Domain: Endpoint
- OS: Linux
- Use Case: Threat Detection
- Tactic: Persistence
- Tactic: Initial Access
- Data Source: Elastic Endgame
- Use Case: Vulnerability
Version: 2
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule queryedit
process where host.os.type == "linux" and event.type == "start" and
event.action in ("exec", "exec_event") and process.parent.executable : (
"/usr/sbin/nginx", "/usr/local/sbin/nginx",
"/usr/sbin/apache", "/usr/local/sbin/apache",
"/usr/sbin/apache2", "/usr/local/sbin/apache2",
"/usr/sbin/php*", "/usr/local/sbin/php*",
"/usr/sbin/lighttpd", "/usr/local/sbin/lighttpd",
"/usr/sbin/hiawatha", "/usr/local/sbin/hiawatha",
"/usr/local/bin/caddy",
"/usr/local/lsws/bin/lswsctrl",
"*/bin/catalina.sh"
) and
process.name : ("*sh", "python*", "perl", "php*", "tmux") and
process.args : ("whoami", "id", "uname", "cat", "hostname", "ip", "curl", "wget", "pwd")
Framework: 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/
-
Sub-technique:
- Name: Web Shell
- ID: T1505.003
- Reference URL: https://attack.mitre.org/techniques/T1505/003/
-
Tactic:
- Name: Initial Access
- ID: TA0001
- Reference URL: https://attack.mitre.org/tactics/TA0001/
-
Technique:
- Name: Exploit Public-Facing Application
- ID: T1190
- Reference URL: https://attack.mitre.org/techniques/T1190/