ET INFO .exe File requested over FTP

Query · suricata

flow:established,to_server;
dsize:>10;
content:"RETR"; depth:4;
content:".exe|0d 0a|"; distance:0;
pcre:"/^RETR\s+[^\r\n]+?\x2eexe\r?$/m";
Raw source ET INFO .exe File requested over FTP · 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 -> $EXTERNAL_NET any (
    msg:"ET INFO .exe File requested over FTP";
    flow:established,to_server;
    dsize:>10;
    content:"RETR"; depth:4;
    content:".exe|0d 0a|"; distance:0;
    pcre:"/^RETR\s+[^\r\n]+?\x2eexe\r?$/m";
    classtype:misc-activity;
    sid:2014906; rev:3;
    metadata:attack_target Client_and_Server, created_at 2012_06_15, deployment Perimeter, deployment alert_only, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_01;
)

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