alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT Suspicious Decimal IP Redirect - Observed in RIG EK Redirects M9"; flow:from_server,established; http.stat_code; content:"302"; http.header; content:"Content-Length|3a 20|0|0d 0a|"; fast_pattern; content:"Location|3a 20|http|3a 2f 2f|8"; nocase; pcre:"/^\d+[\r\n\x2f]/mi"; http.content_type; content:"text/html"; startswith; reference:url,blog.malwarebytes.com/cybercrime/2017/03/websites-compromised-decimal-ip-campaign/; classtype:exploit-kit; sid:2024141; rev:3; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2017_03_31, deployment Perimeter, malware_family RIG, confidence Medium, signature_severity Major, tag Redirector, updated_at 2020_08_04;)