alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Ruskill Reporting on Local Scans"; flow:established,to_server; content:"PRRVMSG"; depth:7; content:"Port Scan started on"; distance:0; content:"with a delay of"; distance:0; classtype:trojan-activity; sid:2013331; rev:1; metadata:created_at 2011_07_27, signature_severity Major, updated_at 2019_07_26;)