ET MALWARE ChromeLoader CnC Checkin M1

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/x?u="; fast_pattern; startswith;
pcre:"/^\d{19}/UR";
content:"is=";
pcre:"/^\d{10}/UR";
content:"lv=";
content:"rv=";
Raw source ET MALWARE ChromeLoader CnC Checkin M1 · Suricata
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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 ChromeLoader CnC Checkin M1";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/x?u="; fast_pattern; startswith;
    pcre:"/^\d{19}/UR";
    content:"is=";
    pcre:"/^\d{10}/UR";
    content:"lv=";
    content:"rv=";
    reference:md5,ad13ce579df176b2c7ab440dd8d2252a;
    classtype:trojan-activity;
    sid:2039746; rev:1;
    metadata:created_at 2022_11_07, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_11_07;
)

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