alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Possible PrivateLoader Payload Request (GET)"; flow:to_server,established; http.method; content:"GET"; http.uri; content:".zip?c="; fast_pattern; pcre:"/(?:[a-zA-Z0-9]{32})$/R"; reference:url,blog.sekoia.io/new-risepro-stealer-distributed-by-the-prominent-privateloader; classtype:command-and-control; sid:2043089; rev:1; 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, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_28, reviewed_at 2025_10_24;)