alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Linux.Ngioweb Stage 1 CnC Activity Client Request (set)"; flow:established,to_server; flowbits:set,ET.Linux.Ngioweb; flowbits:noalert; http.user_agent; content:"Mozilla/5.0|20 28|Windows NT 10.0|3b 20|Win64|3b 20|x64|3b 20|rv:59.0|29 20|Gecko/20100101 Firefox/59.0"; endswith; http.start; content:"GET|20|/min.js?h=aWQ9"; depth:18; fast_pattern; reference:url,blog.netlab.360.com/an-analysis-of-linux-ngioweb-botnet-en/; classtype:command-and-control; sid:2027507; rev:4; metadata:affected_product Linux, attack_target Client_Endpoint, created_at 2019_06_21, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, updated_at 2020_09_17;)