alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET WEB_CLIENT Fake Virus Phone Scam Landing Nov 16"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".html?os="; fast_pattern; content:"&clickid=w"; distance:0; pcre:"/&clickid=w[A-Z0-9]{23}$/"; classtype:social-engineering; sid:2022103; rev:4; metadata:created_at 2015_11_17, confidence High, signature_severity Minor, updated_at 2024_03_18;)