alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Win32 Handy Cafe Checkin"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:11; content:"/se/adx.php"; fast_pattern; http.request_body; content:"lang="; startswith; content:"&op="; distance:0; content:"&RndID="; distance:0; content:"&Mac="; distance:0; content:"&Version="; distance:0; content:"&LocalIp="; distance:0; content:"&ProductKey="; distance:0; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:md5,8ab0a4a3c9cd62727484e634457081a3; classtype:pup-activity; sid:2037785; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_07_18, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_30, reviewed_at 2025_01_22;)