alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Spy-Net Trojan Connection"; flow:established; content:"maininfo|7c|"; depth:9; nocase; content:"|7c|"; distance:3; classtype:trojan-activity; sid:2008644; rev:4; metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)