alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Platinum APT Activity"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".php"; http.user_agent; content:"|3b 20|Win64|3b 20|x64|3b 20|rv|3a|42.0"; http.header_names; to_lowercase; content:"|0d 0a|acceptanceid|0d 0a|"; fast_pattern; reference:url,securelist.com/titanium-the-platinum-group-strikes-again/94961/; classtype:command-and-control; sid:2028959; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, created_at 2019_11_11, deployment Perimeter, confidence High, signature_severity Major, tag PLATINUM, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_21;)