alert udp $HOME_NET any -> $EXTERNAL_NET 1024: (msg:"ET DELETED Srizbi registering with controller"; dsize:20; content:"|2d|"; offset:6; content:"|2d|"; distance:6; within:1; content:!"|00|server."; reference:url,www.secureworks.com/research/threats/ronpaul/; classtype:trojan-activity; sid:2007711; rev:11; metadata:created_at 2010_07_30, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)