alert tcp $HOME_NET any -> $EXTERNAL_NET 1800 (msg:"ET DELETED TroDjan 2.0 Infection Report"; flow:established,to_server; dsize:<60; content:"Windows NT "; depth:11; classtype:trojan-activity; sid:2008587; rev:4; metadata:created_at 2010_07_30, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)