alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"ET WEB_SERVER Generic Webshell Activity"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php?ganteng"; endswith; fast_pattern; http.referer; content:".php?ganteng"; endswith; http.request_body; content:"key=password&method="; startswith; content:"&submit="; distance:0; reference:url,blog.trendmicro.com/trendlabs-security-intelligence/ensiko-a-webshell-with-ransomware-capabilities/; classtype:web-application-attack; sid:2030651; rev:1; metadata:attack_target Web_Server, created_at 2020_08_05, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_05;)