alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET DELETED Nukebot Checkin"; flow:established,to_server; content:"POST "; rawbytes; depth:5; content:"/script.php?"; http_uri; content:!"User-Agent|3a|"; nocase; pcre:"/\/script\.php?\d{8}/Ui"; content:"Kernel|3a|"; reference:url,www.websense.com/securitylabs/alerts/alert.php?AlertID=743; classtype:trojan-activity; sid:2003433; rev:6; metadata:created_at 2010_07_30, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_08_22;)