alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP WinButler User-Agent (WinButler)"; flow:established,to_server; http.user_agent; bsize:9; content:"WinButler"; reference:url,www.winbutler.com; reference:url,www.prevx.com/filenames/239975745155427649-0/WINBUTLER.EXE.html; classtype:pup-activity; sid:2008190; rev:9; metadata:created_at 2010_07_30, confidence High, signature_severity Minor, updated_at 2024_03_02;)