alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Lazarus FALLCHILL Fake SSL Checkin 1"; flow:established; dsize:13; content:"|17 03 01 00 08|"; depth:5; content:"|88 4d 76|"; distance:5; within:3; fast_pattern; pcre:"/[\x04\x06]\x88\x4d\x76$/"; reference:url,www.us-cert.gov/ncas/alerts/TA17-318A; classtype:command-and-control; sid:2024990; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_11_13, deployment Perimeter, malware_family FALLCHILL, performance_impact Low, confidence High, signature_severity Critical, tag Lazarus, updated_at 2019_07_26;)