Unusual Command Execution via Web Server

event.category:process and host.os.type:linux and event.type:start and event.action:exec and (
  process.parent.name:(
    apache2 or asterisk or caddy or daphne or flask or frankenphp or httpd or httpd.worker or
    lswsctrl or mongrel_rails or nginx or php-cgi or php-cgi.cagefs or php-fcgi or starman or
    sw-engine-fpm or uvicorn or uwsgi or varnishd or waitress-serve or zabbix_server or *.cgi
    or *.fcgi or gunicorn* or php-fpm* or lsphp*
  ) or
  process.parent.name:ruby* and process.parent.command_line:(*passenger* or *puma* or *rails*) or
  process.parent.name:python* and process.parent.command_line:(
    *app.py* or *asgi.py* or *django* or *flask* or *hypercorn* or *server.py* or *uvicorn* or *wsgi.py*
  ) or
  process.parent.name:perl* and process.parent.command_line:*plackup* or
  process.parent.name:java and process.parent.args:(
    com.atlassian.jira.startup.Launcher or com.caucho.server.resin.Resin or com.google.gerrit.pgm.Daemon or
    com.ibm.ws.kernel.boot.cmdline.Bootstrap or com.ibm.ws.runtime.WsServer or
    com.sun.enterprise.glassfish.bootstrap.ASMain or io.dropwizard.cli.ServerCommand or
    io.helidon.microprofile.server.Main or io.micronaut.runtime.Micronaut or io.quarkus.runner.GeneratedMain or
    io.vertx.core.Launcher or org.apache.catalina.startup.Bootstrap or org.eclipse.jetty.start.Main or
    org.elasticsearch.bootstrap.Elasticsearch or org.jboss.modules.Main or play.core.server.ProdServerStart or
    weblogic.Server or *-Dsolr.solr.home=* or *BitbucketServerLauncher* or *jenkins.war* or *quarkus-run.jar* or
    *weblogic-launcher.jar* or -Dcatalina.base=* or -Djboss.home.dir=* or -Djetty.home=* or -Dweblogic.Name=* or
    io.helidon.webserver* or org.apereo.cas* or org.keycloak* or org.springframework.boot.loader.*
  )
) and
process.command_line:* and
process.name:(bash or busybox or csh or dash or fish or ksh or mksh or sh or tcsh or zsh) and
process.args:(-c or -cl or -lc) and
not (
  process.parent.name:java and not process.parent.executable:/u0*/* or
  process.working_directory:(/u0*/*/sysman/emd or /u0*/app/oracle/product/*/db_* or /u0*/app/oracle/product/*/dbhome_* or /var/www/*edoc*) or
  process.args:(/usr/bin/rsvg-convert* or /usr/local/bin/wkhtmltopdf*) or
  process.command_line:*/opt/sc/bin/showvulns* or
  (process.parent.name:nginx and process.name:busybox and process.args:gcc*/tmp/lua_*) or
  (process.parent.name:apache2 and process.args:\"/usr/bin/7za*) or
  (process.parent.name:zabbix_server and process.command_line:*fping*) or
  (process.parent.name:php-fpm* and (process.command_line:*/usr/bin/pdftotext* or process.args:clamdscan*))
)