ET MALWARE Papercut MF/NG User/Group Sync FTP Backdoor trigger

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/app";
http.cookie;
content:"JSESSIONID|3d|"; startswith;
http.request_body;
content:"Form0|3d|"; startswith;
content:"inputUsername";
content:"inputPassword"; fast_pattern;
content:"|3d 21|";
target:dest_ip;
Raw source ET MALWARE Papercut MF/NG User/Group Sync FTP Backdoor trigger · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http any any -> $HOME_NET any (
    msg:"ET MALWARE Papercut MF/NG User/Group Sync FTP Backdoor trigger";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/app";
    http.cookie;
    content:"JSESSIONID|3d|"; startswith;
    http.request_body;
    content:"Form0|3d|"; startswith;
    content:"inputUsername";
    content:"inputPassword"; fast_pattern;
    content:"|3d 21|";
    reference:url,vulncheck.com/blog/papercut-rce;
    classtype:trojan-activity;
    sid:2045612; rev:1;
    metadata:affected_product HTTP_Server, attack_target Web_Server, created_at 2023_05_05, deployment Perimeter, deployment Internal, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag Papercut_MF_NG, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_05;
    target:dest_ip;
)

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.