ET MALWARE Powershell Octopus Backdoor Sending System Information (POST)

Query · suricata

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";
Raw source ET MALWARE Powershell Octopus Backdoor Sending System Information (POST) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
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;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.