Versions (3)
Version DetailsCurrent
Rev: 3 • Jul 20, 2017, 12:00 PMET MALWARE Observed Malicious Domain SSL Cert in SNI (RansomBlocker CnC)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Malicious Domain SSL Cert in SNI (RansomBlocker CnC)"; flow:established,to_server; tls.sni; content:"4fp2u2ue4pyqdpfu"; fast_pattern; reference:md5,2067d1cb1a25c6d6d371339fad9123ba; classtype:command-and-control; sid:2024485; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_07_20, deployment Perimeter, performance_impact Moderate, confidence High, signature_severity Major, updated_at 2020_08_12;)
Jul 20, 2017, 12:00 PM
Aug 12, 2020, 12:00 PM
Sep 21, 2024, 3:00 AM
May 30, 2025, 12:04 AM
rules/emerging-malware.rules