ET MALWARE Win32/LockScreen CnC HTTP Pattern

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:",0x"; fast_pattern;
pcre:"/(?:,0x[0-9a-f]{2}){10}$/";
http.header_names;
content:"|0d 0a|Host|0d 0a 0d 0a|"; bsize:10;
Raw source ET MALWARE Win32/LockScreen CnC HTTP Pattern · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/LockScreen CnC HTTP Pattern";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:",0x"; fast_pattern;
    pcre:"/(?:,0x[0-9a-f]{2}){10}$/";
    http.header_names;
    content:"|0d 0a|Host|0d 0a 0d 0a|"; bsize:10;
    reference:md5,8df8d0cd70f96538211c65fb6361704d;
    classtype:command-and-control;
    sid:2022494; rev:4;
    metadata:created_at 2016_02_08, malware_family Win32_LockScreen, confidence High, signature_severity Major, updated_at 2020_10_05;
)

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