alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED Pitbull IRCbotnet Fetch"; flow:to_server,established; content:"Accept|3a20|*/*|0d0a|User-Agent|3a20|Mozilla/5.0|0d0a|"; http_header; reference:url,en.wikipedia.org/wiki/IRC_bot; classtype:trojan-activity; sid:2007626; rev:6; metadata:created_at 2010_07_30, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)