alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Bot.Sezin CnC Checkin"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".php?machine_id="; fast_pattern; content:"&x64"; distance:0; content:"&version="; distance:0; content:"&video_card="; distance:0; content:"&cpu="; distance:0; content:"&junk="; distance:0; http.header_names; to_lowercase; content:!"|0d 0a|user-agent|0d 0a|"; content:!"|0d 0a|referer|0d 0a|"; content:!"|0d 0a|accept"; reference:md5,73611bd5d1d0ad865cd26b003aa525b4; classtype:command-and-control; sid:2025148; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_12_13, deployment Perimeter, malware_family Bot_Sezin, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_20;)