alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Virut.BN Checkin"; flow:established,to_server; http.method; content:"GET"; nocase; http.uri; content:"list.php?c="; content:"&v="; distance:0; content:"&t="; distance:0; pcre:"/c\x3d[0-9A-F]{100}/i"; reference:md5,199d9ea754f193194e251415a2f6dd46; classtype:command-and-control; sid:2012533; rev:5; metadata:created_at 2011_03_21, malware_family Win32_Virut_BN, signature_severity Major, updated_at 2020_04_21;)