alert http $EXTERNAL_NET any -> $HOME_NET any (
msg:"ET MALWARE Win32/RisePro CnC Server Response M4";
flow:established,to_client;
http.stat_code;
content:"200";
http.content_type;
content:"text/html|3b 20|charset|3d|UTF-8";
http.header;
content:"Transfer-Encoding|3a 20|chunked";
http.response_body;
content:"|7b 22|success|22 3a|true|2c 22|result|22 3a 7b|"; startswith; bsize:<41; fast_pattern;
content:"|7d 7d|"; endswith;
reference:url,blog.sekoia.io/new-risepro-stealer-distributed-by-the-prominent-privateloader;
classtype:command-and-control;
sid:2043091; rev:2;
metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_12_28, deployment Perimeter, deployment SSLDecrypt, malware_family Win32_RisePro, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_09_01, reviewed_at 2025_10_24;
)