ET MALWARE Chinotto CnC Activity (hello)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:".php?";
content:"type=hello"; fast_pattern;
content:"&direction=";
pcre:"/^(send|receive)/R";
content:"id=";
http.header_names;
content:!"Referer";
Raw source ET MALWARE Chinotto CnC Activity (hello) · 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 Chinotto CnC Activity (hello)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:".php?";
    content:"type=hello"; fast_pattern;
    content:"&direction=";
    pcre:"/^(send|receive)/R";
    content:"id=";
    http.header_names;
    content:!"Referer";
    reference:md5,55afe67b0cd4a01f3a9a6621c26b1a49;
    reference:url,securelist.com/scarcruft-surveilling-north-korean-defectors-and-human-rights-activists/105074/;
    classtype:trojan-activity;
    sid:2034562; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_11_30, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_05_03;
)

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.