alert http any any -> $HOME_NET 8080 (msg:"ET EXPLOIT Linksys Router Unauthenticated Remote Code Execution"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".cgi"; nocase; http.request_header; header_lowercase; content:"authorization|3a 20|Basic"; startswith; http.request_body; content:"%74%74%63%70%5f%69%70%3d%2d%68%20%60"; fast_pattern; reference:url,sans.org/reading-room/whitepapers/malicious/analyzing-backdoor-bot-mips-platform-35902; classtype:attempted-user; sid:2022758; rev:6; metadata:created_at 2016_04_25, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_28, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)