alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Win32/ProtonBot CnC Response"; flow:established,to_client; http.stat_code; content:"200"; file.data; content:"newtask|3b|"; depth:8; fast_pattern; content:"|3b|1|3b|http"; within:15; content:".exe"; endswith; reference:url,fumik0.com/2019/05/24/overview-of-proton-bot-another-loader-in-the-wild; reference:md5,efb1db340e78f6799d9fbc5ee08f40fe; classtype:command-and-control; sid:2027382; rev:6; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_05_28, deployment Perimeter, deprecation_reason Age, malware_family Win32_ProtonBot, performance_impact Moderate, confidence High, signature_severity Major, updated_at 2023_12_20, reviewed_at 2023_12_20;)