alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32.Koblu"; flow:established,to_server; content:"GET"; nocase; http_method; content:"sid="; nocase; http_uri; content:"&sa="; nocase; http_uri; content:"&p="; http_uri; content:"&q=cards&rf="; http_uri; content:"&enc="; http_uri; content:"&enk=&xsc=&xsp=&xsm="; http_uri; classtype:trojan-activity; sid:2010230; rev:7; metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)