alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE ehow/livestrong Malicious Flash 10/11"; flow:established,to_server; urilen:13; content:".swf"; http_uri; offset:9; depth:4; pcre:"/^\/[a-f0-9]{8}\.swf$/U"; pcre:"/^Referer\x3a[^\r\n]+\/[a-f0-9]{8}\/1(?:0\/[0-2]|1\/\d)\/\r$/Hm"; classtype:trojan-activity; sid:2018029; rev:2; metadata:created_at 2014_01_28, signature_severity Major, updated_at 2019_07_26;)