alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32/Pterodo CnC Checkin"; flow:established,to_server; http.method; content:"POST"; http.user_agent; content:"Wget/"; startswith; http.request_body; content:"versiya="; startswith; fast_pattern; content:"&comp="; distance:0; content:"&id="; distance:0; http.header_names; to_lowercase; content:"|0d 0a|accept"; content:!"|0d 0a|accept-"; content:!"|0d 0a|referer|0d 0a|"; content:!"|0d 0a|cache"; reference:md5,9d8daf70dff4d5bcf791d5f68ba01d7c; classtype:command-and-control; sid:2034345; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_09_04, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_05_01;)