alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS DanaBot Specific UA Observed"; flow:to_server,established; http.user_agent; content:"Mozilla/777.0"; startswith; fast_pattern; classtype:trojan-activity; sid:2037737; rev:1; metadata:created_at 2022_07_11, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_07_11;)