alert http1 $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Daonol C&C Communication"; flow:established,to_server; http.uri; content:"/x/?0"; nocase; pcre:"/\/x\/\?0\w{35}$/"; http.header_names; content:"|0d 0a|SS|0d 0a|"; nocase; content:"|0d 0a|Xost|0d 0a|"; fast_pattern; nocase; reference:url,www.microsoft.com/security/portal/Threat/Encyclopedia/Entry.aspx?Name=Win32%2fDaonol; reference:url,blog.fireeye.com/research/2009/10/gumblar-not-gumby.html; reference:url,www.iss.net/threats/gumblar.html; reference:url,blog.scansafe.com/journal/2009/10/15/gumblar-website-botnet-awakes.html; classtype:command-and-control; sid:2010164; rev:8; metadata:created_at 2010_07_30, signature_severity Major, updated_at 2024_04_10;)