alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Winsoft.E Checkin 2"; flow:established,to_server; content:"winsoft"; nocase; http.uri; content:".asp?prj="; content:"&pid="; content:"&mac="; reference:md5,d773d063d8cf35166831af0dae13a4b7; reference:url,xml.ssdsandbox.net/index.php/935021734dd64921defd1eb266c3fb39; classtype:command-and-control; sid:2012223; rev:3; metadata:created_at 2011_01_24, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_21;)