Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Fingerprinting Service in TLS SNI (customfingerprints .bablosoft .com)"; flow:established,to_server; tls.sni; bsize:32; content:"customfingerprints.bablosoft.com"; fast_pattern; reference:url,www.team-cymru.com/post/bablosoft-lowering-the-barrier-of-entry-for-malicious-actors; classtype:misc-activity; sid:2054227; rev:2; metadata:attack_target Client_Endpoint, created_at 2024_07_02, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_01_20, reviewed_at 2024_12_17;)