alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE KeyloggerOnline Keylogger Checkin (sleep)"; flow:established,to_server; http.uri; content:"/sleep"; fast_pattern; http.user_agent; content:"Internet Explorer"; http.header_names; content:!"|0d 0a|Accept"; content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a|"; startswith; reference:md5,06b783d348a4f9d72bf743c8262778ef; classtype:command-and-control; sid:2013368; rev:5; metadata:created_at 2011_08_05, signature_severity Major, updated_at 2024_03_08;)