alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32/Downloader.Mevade.FBV CnC Beacon"; flow:established,to_server; urilen:42; http.uri; content:"/updater/"; pcre:"/^[a-f0-9]{32}\/[0-9]$/Ri"; reference:url,blog.trendmicro.com/trendlabs-security-intelligence/us-taiwan-most-affected-by-mevade-malware/; reference:url,blog.damballa.com/archives/2135; classtype:command-and-control; sid:2017490; rev:4; metadata:attack_target Client_Endpoint, created_at 2013_09_19, deployment Perimeter, signature_severity Major, tag c2, updated_at 2020_04_27, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)