alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE System Information Being Sent in User-Agent"; flow:established,to_server; http.user_agent; content:"UserName|3a 20|"; fast_pattern; content:"System|3a 20|"; content:"GPU|3a 20|"; content:"RAM|3a 20|"; content:"CPU|3a 20|"; reference:md5,64f0fdfbfaa142ae83d8c3f9326e7a94; classtype:trojan-activity; sid:2037038; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_06_17, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_06_17;)