alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32/SelfStarterInternet.InfoStealer Checkin"; flow:established,to_server; http.method; content:"POST"; nocase; http.uri; content:"/login.aspx?ReturnUrl=/card/Pay_query.aspx"; fast_pattern; http.request_body; content:"VIEWSTATE="; nocase; content:"EVENTVALIDATION="; nocase; distance:0; content:"&txtUser="; nocase; distance:0; content:"&txtPwd="; nocase; distance:0; content:"&btnEnter="; nocase; distance:0; reference:md5,67c748f3ecc0278f1f94596f86edc509; classtype:command-and-control; sid:2014307; rev:5; metadata:created_at 2012_03_05, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_08;)