alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP CoinSurf Proxy Client Registration"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/api/v1/signup"; bsize:14; http.header_names; content:"X-DEVICE-ID"; http.request_body; content:"|7b 22|email|22 3a 22|"; startswith; content:"|40|coinaffiliate|2e|com|22 2c 22|username|22 3a 22|"; distance:52; within:32; fast_pattern; content:"|22 2c 22|password|22 3a 22|"; distance:70; within:14; reference:md5,7f04ef97ddb1bcc3fa473b9a01ce4164; classtype:pup-activity; sid:2038554; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Mac_OSX, attack_target Client_Endpoint, created_at 2022_08_18, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_08_18, reviewed_at 2025_10_24;)