ET MALWARE Filez Downloader Checkin

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".php"; endswith;
http.content_type;
content:"application/x-www-form-urlencoded"; bsize:33;
http.request_body;
content:"filez=%2f9j%2f4AAQSkZJRgAB"; startswith; nocase; fast_pattern;
Raw source ET MALWARE Filez Downloader Checkin · 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 Filez Downloader Checkin";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php"; endswith;
    http.content_type;
    content:"application/x-www-form-urlencoded"; bsize:33;
    http.request_body;
    content:"filez=%2f9j%2f4AAQSkZJRgAB"; startswith; nocase; fast_pattern;
    reference:md5,94cc739f30e69f6113a9bcd8d343a156;
    classtype:trojan-activity;
    sid:2042775; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_05_25, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_14, former_sid 2851692;
)

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