Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Powershell Octopus Backdoor Sending System Information (POST)"; flow:established,to_server; http.request_line; content:"POST /proxy HTTP/1.1"; fast_pattern; http.header_names; content:!"Referer"; http.request_body; content:"NewFolderName="; startswith; pcre:"/\*\*\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\*\*/R"; reference:url,app.any.run/tasks/0c991e38-b571-435c-a34b-281b2c9df1ef/; classtype:trojan-activity; sid:2034935; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_01_18, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_01_18;)