alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Red Wolf/RedCurl Domain (amscloudhost .com) in TLS SNI"; flow:established,to_server; tls.sni; dotprefix; content:".amscloudhost.com"; endswith; fast_pattern; reference:url,bi.zone/eng/expertise/blog/red-wolf-vnov-shpionit-za-kommercheskimi-organizatsiyami/; reference:url,www.virustotal.com/gui/ip-address/23.254.224.79/relations; reference:url,www.facct.ru/blog/redcurl-2023/; classtype:command-and-control; sid:2047966; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2023_09_07, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Red_Wolf, tag RedCurl, updated_at 2023_09_08, reviewed_at 2023_09_07;)