alert tcp $HOME_NET any -> $EXTERNAL_NET [25,587,2525] (msg:"ET MALWARE Predator Logger Sending Data over SMTP"; flow:established,to_server; content:"Subject|3a 20|Predator Logger|20|"; fast_pattern; reference:md5,91f885e08d627097fb1116a3d4634b82; reference:url,stopmalvertising.com/malware-reports/analysis-of-the-predator-pain-keylogger.html; classtype:trojan-activity; sid:2018017; rev:6; metadata:created_at 2014_01_28, deprecation_reason Age, signature_severity Major, updated_at 2024_03_06, reviewed_at 2024_02_09;)