alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE indux.php check-in"; flow:established,to_server; http.uri; content:"/indux.php?U="; nocase; fast_pattern; content:"@"; http.referer; content:"http|3a|//www.google.com"; nocase; bsize:21; classtype:trojan-activity; sid:2011387; rev:8; metadata:created_at 2010_09_28, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_13;)