alert http any any -> $HOME_NET 8080 (msg:"ET WORM TheMoon.linksys.router 1"; flow:established; urilen:7; http.method; content:"GET"; http.uri; content:"/HNAP1/"; http.host; pcre:"/^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/"; reference:url,isc.sans.edu/forums/diary/Linksys+Worm+Captured/17630; classtype:trojan-activity; sid:2018131; rev:6; metadata:created_at 2014_02_13, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_18;)