alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET WEB_CLIENT Possible Fake AV Phone Scam Landing Feb 26"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".html"; endswith; pcre:"/^\/[a-zA-Z0-9]+\.html$/"; http.host; content:".rackcdn.com"; fast_pattern; endswith; pcre:"/^[a-f0-9]{20}-[a-f0-9]{32}\.r[0-9]{1,2}\.cf[0-9]\.rackcdn\.com$/"; classtype:social-engineering; sid:2022574; rev:4; metadata:created_at 2016_03_01, confidence Medium, signature_severity Minor, updated_at 2024_02_28;)