Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Allasenha/CarnavalHeist RAT Related Domain (nfe-digital .digital) in TLS SNI"; flow:established,to_server; tls.sni; dotprefix; content:".nfe-digital.digital"; endswith; fast_pattern; reference:url,harfanglab.io/en/insidethelab/allasenha-allakore-variant-azure-c2-steal-banking-latin-america/; reference:url,blog.talosintelligence.com/new-banking-trojan-carnavalheist-targets-brazil/; classtype:social-engineering; sid:2053039; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2024_05_30, deployment Perimeter, malware_family Allasenha_RAT, malware_family CarnavalHeist, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_10_04, reviewed_at 2024_10_04;)