ET MALWARE Malicious XSL file download (FTP)

Query · suricata

flow:established,to_server;
content:"RETR|20|/frog/usoprive.xsl"; fast_pattern;
Raw source ET MALWARE Malicious XSL file download (FTP) · 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 ftp $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Malicious XSL file download (FTP)";
    flow:established,to_server;
    content:"RETR|20|/frog/usoprive.xsl"; fast_pattern;
    reference:md5,dd0124264f131a203ecfc70314dcec04;
    reference:url,asec.ahnlab.com/ko/19439/;
    classtype:trojan-activity;
    sid:2031482; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_01_05, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_01_05;
)

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