ET HUNTING [TW] Likely Hex Executable String

Query · suricata

flow:to_client,established;
file_data;
content:"4D5A";
content:"63616E6E6F74"; fast_pattern; distance:178; within:12;
content:"72756E"; distance:8; within:6;
content:"444F53"; distance:8; within:6;
Raw source ET HUNTING [TW] Likely Hex Executable String · Suricata
Esc
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 HUNTING [TW] Likely Hex Executable String";
    flow:to_client,established;
    file_data;
    content:"4D5A";
    content:"63616E6E6F74"; fast_pattern; distance:178; within:12;
    content:"72756E"; distance:8; within:6;
    content:"444F53"; distance:8; within:6;
    classtype:misc-activity;
    sid:2035769; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_04_06, deployment Perimeter, confidence Medium, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_04_06, reviewed_at 2024_12_02;
)

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