alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MALWARE Dridex/Bugat/Feodo POST Checkin";
flow:established,to_server;
http.method;
content:"POST";
http.header_names;
content:!"User-Agent|0d 0a|";
content:!"Accept";
content:!"Connection|0d 0a|";
content:!"Referer|0d 0a|";
http.header;
content:"Content-Length|3a 20|59|0d 0a|Host|3a 20|"; depth:26;
http.host;
pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}(?:\x3a\d{1,5})?$/";
http.uri;
pcre:"/^\/[\/a-z0-9]+$/i";
reference:md5,2ddb6cb347eb7939545a1801c72f1f3f;
classtype:command-and-control;
sid:2018771; rev:6;
metadata:created_at 2014_07_24, signature_severity Major, updated_at 2020_05_01;
)