alert dns $HOME_NET any -> any any (msg:"ET MALWARE Zbot .onion Proxy Domain"; dns.query; content:"mmc65z4xsgbcbazl"; depth:16; fast_pattern; nocase; classtype:trojan-activity; sid:2020684; rev:5; metadata:created_at 2015_03_12, confidence High, signature_severity Major, updated_at 2020_09_01;)