alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MALWARE DarkGate CNC Checkin";
flow:established,to_server;
urilen:1;
flowbits:set,ET.DarkGate.1;
http.method;
content:"POST";
http.user_agent;
content:"Mozilla|2f|4.0|20 28|compatible|3b 20|Synapse|29|"; endswith; fast_pattern;
http.request_body;
content:"id="; depth:3;
content:"&data="; distance:0;
content:"&action="; distance:0;
http.protocol;
content:"HTTP/1.0";
http.header_names;
content:!"Referer";
reference:md5,33aabffe4ece4d725e558e87d26a9b14;
reference:url,blog.ensilo.com/darkgate-malware;
classtype:command-and-control;
sid:2026629; rev:4;
metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_11_19, deployment Perimeter, malware_family DarkGate, performance_impact Low, confidence High, signature_severity Major, tag RAT, updated_at 2020_09_16;
)