Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Generic Webshell Accessed on External Compromised Server"; flow:established,to_client; file.data; content:"<center><h1>IDBTE4M CODE 87</h1><br>[uname] Linux"; nocase; fast_pattern; classtype:web-application-attack; sid:2032519; rev:2; metadata:affected_product Web_Server_Applications, attack_target Web_Server, created_at 2021_04_06, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_04_06;)