ET MALWARE Malicious lnk Downloader Activity (GET)

Query · suricata

flow:established,to_server;
http.request_line;
content:"GET /joking.html HTTP/1.1"; fast_pattern;
http.header_names;
content:!"Referer";
http.user_agent;
content:!"Linux";
content:!"Android";
http.host;
content:".ru"; endswith;
Raw source ET MALWARE Malicious lnk Downloader Activity (GET) · 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 Malicious lnk Downloader Activity (GET)";
    flow:established,to_server;
    http.request_line;
    content:"GET /joking.html HTTP/1.1"; fast_pattern;
    http.header_names;
    content:!"Referer";
    http.user_agent;
    content:!"Linux";
    content:!"Android";
    http.host;
    content:".ru"; endswith;
    reference:md5,d6b182c825d961154b5415de1a061ae0;
    classtype:trojan-activity;
    sid:2035290; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_02_25, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_02_25, reviewed_at 2023_08_25;
)

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