ET MALWARE Win32.Sality-GR Checkin 2

Query · suricata

flow:to_server,established;
http.uri;
content:".png?"; fast_pattern;
pcre:"/\.png\x3f[0-9a-f]{4,8}\x3d\d+?$/";
http.header_names;
content:!"Accept";
content:!"Referer";
content:"|0d 0a|User-Agent|0d 0a|"; startswith;
Raw source ET MALWARE Win32.Sality-GR Checkin 2 · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32.Sality-GR Checkin 2";
    flow:to_server,established;
    http.uri;
    content:".png?"; fast_pattern;
    pcre:"/\.png\x3f[0-9a-f]{4,8}\x3d\d+?$/";
    http.header_names;
    content:!"Accept";
    content:!"Referer";
    content:"|0d 0a|User-Agent|0d 0a|"; startswith;
    reference:md5,99d614964eafe83ec4ed1a4537be35b9;
    classtype:command-and-control;
    sid:2022804; rev:5;
    metadata:created_at 2016_05_13, performance_impact Significant, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_29;
)

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