Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Earth Kapre/RedCurl Domain (preslive .cn .alphastoned .pro) in TLS SNI"; flow:established,to_server; tls.sni; bsize:27; content:"preslive.cn.alphastoned.pro"; fast_pattern; reference:url,www.trendmicro.com/en_us/research/24/c/unveiling-earth-kapre-aka-redcurls-cyberespionage-tactics-with-t.html; classtype:trojan-activity; sid:2051607; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2024_03_11, deployment Perimeter, malware_family RedCurl, malware_family Earth_Kapre, performance_impact Low, confidence High, signature_severity Major, tag RedCurl, tag Earth_Kapre, updated_at 2024_03_11, reviewed_at 2025_07_14;)