Persistence (TA0003)(external, opens in a new tab or window)
Execution (TA0002)(external, opens in a new tab or window)
Command and Control (TA0011)(external, opens in a new tab or window)
text code block:event.category:process and host.os.type:linux and event.type:start and event.action:exec and ( process.parent.name:( "apache" or "nginx" or "apache2" or "httpd" or "lighttpd" or "caddy" or "mongrel_rails" or "haproxy" or "gunicorn" or "uwsgi" or "openresty" or "cherokee" or "h2o" or "resin" or "puma" or "unicorn" or "traefik" or "uvicorn" or "tornado" or "hypercorn" or "daphne" or "twistd" or "yaws" or "webfsd" or "httpd.worker" or "flask" or "rails" or "mongrel" or php-fpm* or "php-cgi" or "php-fcgi" or "php-cgi.cagefs" or "java" or "node" ) or user.name:("apache" or "www-data" or "httpd" or "nginx" or "lighttpd" or "tomcat" or "tomcat8" or "tomcat9") or user.id:("33" or "498" or "48" or "54321") ) and process.working_directory:( /var/www/* or /usr/share/nginx/* or /srv/www/* or /srv/http/* or */webapps/* or /home/*/public_html/* or /home/*/www/* or /opt/* or /u0*/* ) and process.command_line:* and process.name:(bash or dash or sh or tcsh or csh or zsh or ksh or fish) and process.args:"-c" and not ( (process.parent.name:java and not process.parent.executable:/u0*/*) or (process.parent.name:node and process.parent.executable:(/home/*/.vscode-server/* or /users/*/.vscode-server/* or /bin/node or /usr/bin/node or /usr/local/bin/node or /opt/plesk/node/*/bin/node)) or process.working_directory:(/u0*/*/sysman/emd or /u0*/app/oracle/product/*/dbhome_* or /u0*/app/oracle/product/*/db_* or /var/www/*edoc*) or process.parent.executable:/tmp/* or process.args:/usr/local/bin/wkhtmltopdf* or process.parent.name:php )
Install detection rules in Elastic Security
Detect Unusual Web Server Command Execution in the Elastic Security detection engine by installing this rule into your Elastic Stack.
To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(external, opens in a new tab or window).