ET MALWARE Win32.Sality-GR Checkin

Query · suricata

flow:established,to_server;
http.uri;
content:".gif?"; fast_pattern;
pcre:"/^[0-9a-f]{4,8}\x3d\x2d?\d+(?:&id\x3d\d+)?$/R";
http.header_names;
content:"|0d 0a|User-Agent"; depth:12;
content:!"Accept";
content:!"Referer";
Raw source ET MALWARE Win32.Sality-GR Checkin · 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 $HOME_NET any -> any any (
    msg:"ET MALWARE Win32.Sality-GR Checkin";
    flow:established,to_server;
    http.uri;
    content:".gif?"; fast_pattern;
    pcre:"/^[0-9a-f]{4,8}\x3d\x2d?\d+(?:&id\x3d\d+)?$/R";
    http.header_names;
    content:"|0d 0a|User-Agent"; depth:12;
    content:!"Accept";
    content:!"Referer";
    reference:md5,3a03a20bfefe3fdd01659d47d2ed76c8;
    classtype:command-and-control;
    sid:2018340; rev:12;
    metadata:created_at 2013_06_07, performance_impact Significant, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_08;
)

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