alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed File Sharing Domain (dracoon .team in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".dracoon.team"; endswith; fast_pattern; reference:url,www.dracoon.com/en/product; classtype:misc-activity; sid:2049170; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_11_13, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_11_13, reviewed_at 2024_10_14;)