alert http any any -> $HOME_NET any (msg:"ET EXPLOIT Linksys E-Series Device RCE Attempt"; flow:to_server,established; http.method; content:"POST"; http.uri; content:".cgi"; http.request_body; content:"ttcp_ip="; content:"-h"; distance:0; content:"&ttcp_num="; fast_pattern; reference:url,www.exploit-db.com/exploits/31683/; reference:url,researchcenter.paloaltonetworks.com/2018/09/unit42-multi-exploit-iotlinux-botnets-mirai-gafgyt-target-apache-struts-sonicwall/; classtype:attempted-admin; sid:2026102; rev:4; metadata:attack_target Networking_Equipment, created_at 2018_09_10, deployment Perimeter, malware_family Mirai, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_28;)