alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/ProtonBot Stealer Activity"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".php?id="; content:"-"; distance:8; within:1; content:"-"; distance:4; within:1; content:"-"; distance:4; within:1; content:"-"; distance:4; within:1; content:"&clip=get"; distance:12; within:9; endswith; http.user_agent; content:"Proton Browser"; fast_pattern; http.header_names; content:!"Referer"; reference:url,fumik0.com/2019/05/24/overview-of-proton-bot-another-loader-in-the-wild; reference:md5,efb1db340e78f6799d9fbc5ee08f40fe; classtype:trojan-activity; sid:2027383; rev:3; metadata:created_at 2019_05_28, malware_family ProtonBot, confidence High, signature_severity Major, updated_at 2020_09_17;)