alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Lampion CnC Activity"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; endswith; http.content_type; content:"application/x-www-form-urlencoded"; http.request_body; content:"plug=NAO&SYS=Windows"; startswith; fast_pattern; content:"&AVS="; distance:0; content:"&USERPC="; distance:0; content:"&NAV="; distance:0; content:"&ORI="; distance:0; reference:url,seguranca-informatica.pt/targeting-portugal-a-new-trojan-lampion-has-spread-using-template-emails-from-the-portuguese-government-finance-tax; classtype:command-and-control; sid:2029221; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_01_02, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, updated_at 2020_01_02;)