alert http any any -> $HOME_NET any (msg:"ET EXPLOIT NUUO OS Command Injection"; flow:to_server,established; http.uri; content:"/handle_iscsi.php"; http.request_body; content:"act=discover&address="; fast_pattern; pcre:"/[^&]*(?:\x60|\x24)/R"; reference:url,researchcenter.paloaltonetworks.com/2018/09/unit42-multi-exploit-iotlinux-botnets-mirai-gafgyt-target-apache-struts-sonicwall/; classtype:attempted-admin; sid:2026107; rev:4; metadata:attack_target Networking_Equipment, created_at 2018_09_10, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_19, mitre_tactic_id TA0008, mitre_tactic_name Lateral_Movement, mitre_technique_id T1210, mitre_technique_name Exploitation_Of_Remote_Services;)