ET MALWARE Lurk Downloader Check-in

Query · suricata

flow:to_server,established;
http.method;
content:"GET";
http.uri;
content:"/lolo/"; startswith; fast_pattern;
content:".html"; endswith;
pcre:"/^\/lolo\/[0-9]+\/[0-9]+\/[0-9]+\/[0-9]+\.html$/";
http.user_agent;
content:"Mozilla/4.0 (compatible|3b 20|MSIE 8.0|3b 20|Windows NT 5.1|3b 20|Trident/4.0)";
Raw source ET MALWARE Lurk Downloader Check-in · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Lurk Downloader Check-in";
    flow:to_server,established;
    http.method;
    content:"GET";
    http.uri;
    content:"/lolo/"; startswith; fast_pattern;
    content:".html"; endswith;
    pcre:"/^\/lolo\/[0-9]+\/[0-9]+\/[0-9]+\/[0-9]+\.html$/";
    http.user_agent;
    content:"Mozilla/4.0 (compatible|3b 20|MSIE 8.0|3b 20|Windows NT 5.1|3b 20|Trident/4.0)";
    reference:url,secureworks.com/cyber-threat-intelligence/threats/malware-analysis-of-the-lurk-downloader/;
    classtype:trojan-activity;
    sid:2018926; rev:4;
    metadata:created_at 2014_08_12, signature_severity Major, updated_at 2020_05_01;
)

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