ET MALWARE Win32/Phorpiex Template 6 Active - Outbound Malicious Email Spam

alert smtp $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Phorpiex Template 6 Active - Outbound Malicious Email Spam";
    flow:established,to_server;
    content:"Subject|3a 20|YOU|20|BETTER|20|READ|20|THIS|0d|"; fast_pattern;
    content:"COLLECTED|20|ALL|20|YOUR|20|FILES";
    content:"in|20|Bitcoin"; nocase;
    content:"receiving|20|the|20|Bitcoin"; nocase;
    threshold:type limit, count 1, seconds 30, track by_src;
    classtype:command-and-control;
    sid:2031210; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, created_at 2020_11_17, deployment Perimeter, deployment Internal, malware_family Phorpiex, performance_impact Low, confidence High, signature_severity Major, tag SpamBot, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_17;
)