alert http $HTTP_SERVERS any -> $EXTERNAL_NET any (
msg:"ET WEB_SERVER Gootkit Website Infection Request for FTP Credentials from Control Server";
flow:established,to_server;
flowbits:set,ET.GOOTKIT;
http.method;
content:"GET";
http.uri;
content:"/ftp"; nocase;
http.header;
content:!"www.trendmicro.com";
http.user_agent;
content:"Mozilla/4.0 (compatible|3B 20|Win32|3B 20|WinHttp.WinHttpRequest"; nocase; startswith;
reference:url,www.m86security.com/labs/i/GootKit--Automated-Website-Infection,trace.1368~.asp;
classtype:web-application-attack;
sid:2011290; rev:9;
metadata:created_at 2010_09_28, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_14;
)