alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET EXPLOIT Kingdee Cloud Star Deserialization Vulnerability"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"Kingdee"; content:".UserService."; distance:0; http.content_type; content:"text/json"; http.header_names; content:"|0d 0a|cmd|0d 0a|"; fast_pattern; http.request_body; content:"|22|ap0|22 3a 22|"; reference:url,gksec.com/K3cloud_rce.html; classtype:trojan-activity; sid:2054074; rev:2; metadata:affected_product Kingdee_Cloud, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2024_06_26, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_06_05;)