ET MALWARE Kimsuky Related FTP File Download

Query · suricata

flow:established,to_server;
content:"RETR|20|/board/"; fast_pattern;
pcre:"/[a-z]{8}.(:?psd|dib)/Ri";
Raw source ET MALWARE Kimsuky Related FTP File Download · Suricata
Esc
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 Kimsuky Related FTP File Download";
    flow:established,to_server;
    content:"RETR|20|/board/"; fast_pattern;
    pcre:"/[a-z]{8}.(:?psd|dib)/Ri";
    reference:url,github.com/eset/malware-ioc/tree/master/kimsuky/hotdoge_donutcat_case;
    classtype:trojan-activity;
    sid:2034690; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_12_13, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_12_13;
)

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