ET HUNTING Possible Obfuscator io JavaScript Obfuscation Exclusion

Query · suricata

flow:established,to_server;
flowbits:set,ET.obfuscator_io_exclusion;
flowbits:noalert;
http.uri;
content:"/_sec/cp_challenge/sec-cpt-"; startswith; fast_pattern;
content:"-"; distance:1; within:1;
content:".js"; endswith; distance:1; within:3;

Rule dependencies

Feeds into

  • 1 rule read ET.obfuscator_io_exclusion · view all
Raw source ET HUNTING Possible Obfuscator io JavaScript Obfuscation Exclusion · 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 HUNTING Possible Obfuscator io JavaScript Obfuscation Exclusion";
    flow:established,to_server;
    flowbits:set,ET.obfuscator_io_exclusion;
    flowbits:noalert;
    http.uri;
    content:"/_sec/cp_challenge/sec-cpt-"; startswith; fast_pattern;
    content:"-"; distance:1; within:1;
    content:".js"; endswith; distance:1; within:3;
    reference:url,obfuscator.io;
    classtype:trojan-activity;
    sid:2038591; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_08_22, deployment Perimeter, confidence Low, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_08_22;
)

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