alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT CC Skimmer Domain in TLS SNI (chartzend .com)"; flow:established,to_server; tls.sni; bsize:13; content:"chartzend.com"; fast_pattern; reference:url,www.malwarebytes.com/blog/news/2024/08/hundreds-of-online-stores-hacked-in-new-campaign; classtype:exploit-kit; sid:2056490; rev:2; metadata:attack_target Client_Endpoint, created_at 2024_10_04, deployment Perimeter, confidence High, signature_severity Major, tag CC_Skimmer, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_12_24, reviewed_at 2025_03_07, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1189, mitre_technique_name Drive_by_Compromise;)