alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT Yachtcontrol Webservers RCE CVE-2019-17270 (Outbound)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/pages/sytemcall.php?command=|7c|"; startswith; fast_pattern; reference:url,unit42.paloaltonetworks.com/mirai-variant-echobot-resurfaces-with-13-previously-unexploited-vulnerabilities/; reference:cve,2019-17270; classtype:attempted-admin; sid:2029152; rev:4; metadata:affected_product Linux, attack_target Client_Endpoint, created_at 2019_12_16, cve CVE_2019_17270, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_13;)