alert smtp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Phorpiex Template 9 Active - Outbound Malicious Email Spam"; flow:established,to_server; content:"Subject|3a 20|"; pcre:"/^(I\x20RECORDED\x20YOU|YOUR\x20DEVICE\x20AND\x20EMAIL)/R"; content:"some|20|bad|20|news"; fast_pattern; nocase; content:"my|20|private|20|"; nocase; pcre:"/^(malware|trojan)/R"; content:"|20|Bitcoin|20 28|BTC|29|"; nocase; threshold:type limit, count 1, seconds 60, track by_src; classtype:social-engineering; sid:2045229; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2023_04_27, deployment Perimeter, deployment Internal, malware_family Win32_Phorpiex, confidence High, signature_severity Major, tag SpamBot, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_08_27; target:dest_ip;)