ET SHELLCODE Javascript Split String Unicode Heap Spray Attempt

Query · suricata

flow:established,to_client;
content:"|22|u|22 20|+|20 22|0|22 20|+|20 22|";
content:"|22 20|+|20 22|"; distance:1; within:5;
pcre:"/\x220\x22\x20\x2B\x20\x22[a-d]\x22\x20\x2B\x20\x22/smi";
Raw source ET SHELLCODE Javascript Split String Unicode Heap Spray Attempt · 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 $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET SHELLCODE Javascript Split String Unicode Heap Spray Attempt";
    flow:established,to_client;
    content:"|22|u|22 20|+|20 22|0|22 20|+|20 22|";
    content:"|22 20|+|20 22|"; distance:1; within:5;
    pcre:"/\x220\x22\x20\x2B\x20\x22[a-d]\x22\x20\x2B\x20\x22/smi";
    classtype:shellcode-detect;
    sid:2012925; rev:2;
    metadata:created_at 2011_06_02, confidence High, signature_severity Major, updated_at 2019_07_26;
)

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