ET HUNTING EXE Base64 Encoded potential malware

Query · suricata

flow:established,from_server;
file.data;
content:"TVqQAAMAAAAEAAAA//8AALgAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"; fast_pattern;
content:!"<html"; nocase;
content:!"<body"; nocase;
content:!"<script"; nocase;
Raw source ET HUNTING EXE Base64 Encoded potential malware · 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 EXE Base64 Encoded potential malware";
    flow:established,from_server;
    file.data;
    content:"TVqQAAMAAAAEAAAA//8AALgAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"; fast_pattern;
    content:!"<html"; nocase;
    content:!"<body"; nocase;
    content:!"<script"; nocase;
    reference:url,urlhaus.abuse.ch/url/319004/;
    classtype:misc-activity;
    sid:2029538; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_02_26, deployment Perimeter, confidence Low, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_02_26;
)

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