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="; startswith; fast_pattern; http.user_agent; bsize:112; 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"; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:url,dfir.it/blog/2019/02/26/the-supreme-backdoor-factory; classtype:trojan-activity; sid:2030254; rev:4; metadata:affected_product Linux, attack_target Client_Endpoint, created_at 2020_06_05, deployment Perimeter, confidence High, signature_severity Major, updated_at 2024_05_04;)