alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MALWARE Blaze/Supreme Bot Activity";
flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/update.php?tag="; depth:16; fast_pattern;
http.user_agent;
content:"Mozilla/5.0 (Windows NT 6.3|3b 20|Win64|3b 20|x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2049.0 Safari/537.36"; bsize:112;
http.header_names;
content:!"Referer";
reference:url,dfir.it/blog/2019/02/26/the-supreme-backdoor-factory;
classtype:trojan-activity;
sid:2030254; rev:1;
metadata:affected_product Linux, attack_target Client_Endpoint, created_at 2020_06_05, deployment Perimeter, confidence High, signature_severity Major, updated_at 2020_06_05;
)