alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32.Hupigon.dkwt Related Checkin"; flow:established,to_server; http.method; content:"GET"; nocase; http.uri; content:"htm?mac="; nocase; content:"&os="; nocase; distance:0; content:"&ver="; nocase; distance:0; content:"&id="; nocase; distance:0; pcre:"/\?mac=[0-9]*?&os=[a-z]*?&ver=[0-9]{8}&id=/i"; classtype:command-and-control; sid:2009704; rev:10; metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_22;)