alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Filecoder.STOP Variant Request for Public Key"; flow:established,to_server; threshold:type limit, track by_dst, seconds 60, count 1; http.method; content:"GET"; http.uri; content:"/get.php?pid="; fast_pattern; content:"&first=true"; distance:32; within:11; endswith; http.user_agent; content:"Microsoft Internet Explorer"; depth:27; endswith; http.header_names; content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a 0d 0a|"; reference:md5,13f04ff944fa65eddd3e911740837a8a; reference:md5,c0672f0359afba1c24ab0f90f568bdc0; classtype:trojan-activity; sid:2036334; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_09_12, deployment Perimeter, malware_family Win32_Filecoder_STOP, performance_impact Low, confidence High, signature_severity Major, updated_at 2020_09_17;)