alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Rovnix.J Checkin 2"; flow:established,to_server; http.method; content:"POST"; http.header_names; content:!"Referer|0d 0a|"; http.request_body; content:"[0]|0d 0a|LP="; content:"|0a|VID="; distance:0; reference:md5,9471e926eda81b4f797b6cfe273e4e79; classtype:command-and-control; sid:2020396; rev:3; metadata:created_at 2015_02_11, malware_family Win32_Rovnix_J, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_05_15;)