alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Sharik/Smoke Loader Receiving Payload"; flow:established,from_server; http.stat_code; content:"404"; file.data; content:"|00|"; distance:1; within:1; content:"|00|MZ"; distance:1; within:3; content:"This program must be run under Win32"; distance:0; fast_pattern; reference:md5,65c7426b056482fcda962a7a14e86601; classtype:trojan-activity; sid:2023567; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2016_11_30, deployment Perimeter, malware_family Sharik, malware_family Smoke_Loader, performance_impact Low, confidence High, signature_severity Major, updated_at 2020_08_03;)