#alert tcp $EXTERNAL_NET any -> $HOME_NET $HTTP_PORTS (msg: "BLEEDING-EDGE VIRUS PHPInclude.Worm Inbound Attack"; flow: to_server,established; content:"?&cmd=cd%20/tmp\;wget%20"; nocase; content:"perl%20"; nocase; reference:url,www.k-otik.com/exploits/20041225.PhpIncludeWorm.php; classtype: trojan-activity; sid: 2001614; rev:12; )