ET MALWARE TripleNine RAT Checkin

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/999"; fast_pattern; bsize:4;
http.header;
content:".0|0d 0a|Host";
http.header_names;
content:!"Referer|0d 0a|";
Raw source ET MALWARE TripleNine RAT Checkin · 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 TripleNine RAT Checkin";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/999"; fast_pattern; bsize:4;
    http.header;
    content:".0|0d 0a|Host";
    http.header_names;
    content:!"Referer|0d 0a|";
    classtype:command-and-control;
    sid:2017021; rev:7;
    metadata:created_at 2013_06_15, signature_severity Major, updated_at 2020_09_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.