alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MOBILE_MALWARE Suspected Android Youzicheng Proxy Activity"; flow:established,to_server; urilen:17; http.method; content:"POST"; http.uri; content:"/api/socksLog/add"; http.user_agent; content:"|20|Android|20|"; http.request_body; content:"|7b 22|channelid|22 3a 22|"; startswith; nocase; fast_pattern; content:"|2c 22|content|22 3a 22|"; distance:0; content:"|2c 22|deviceid|22 3a 22|"; distance:0; nocase; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:md5,c907d74ace51cec7cb53b0c8720063e1; classtype:trojan-activity; sid:2029635; rev:2; metadata:attack_target Client_Endpoint, created_at 2020_03_13, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_20;)