alert tcp $HOME_NET any -> $EXTERNAL_NET [25,26,587,2525] (msg:"ET MALWARE Predator Pain Sending Data over SMTP"; flow:established,to_server; content:"Subject|3a 20|Predator Pain v"; fast_pattern; reference:md5,e774a7e6ca28487db649458f48230199; reference:url,stopmalvertising.com/malware-reports/analysis-of-the-predator-pain-keylogger.html; classtype:trojan-activity; sid:2018688; rev:5; metadata:created_at 2014_07_17, deprecation_reason Age, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_08, reviewed_at 2024_03_08;)