alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32/Pterodo.CL CnC Checkin"; flow:established,to_server; http.method; content:"POST"; http.user_agent; content:"Wget/"; depth:5; http.request_body; content:"versiya="; depth:8; content:"&comp="; distance:0; content:"&sysinfo="; distance:0; fast_pattern; http.header_names; content:"Accept"; content:!"Accept-"; content:!"Referer"; content:!"Cache"; reference:md5,46C4A755E80EE4DF590C87C98115A5C7; classtype:command-and-control; sid:2034343; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_04_26, deployment Perimeter, malware_family Pterodo, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_25;)