ET MALWARE REvil Exfil SFTP Certificate Inbound

Query · suricata

flow:to_client,established;
content:"Kanzas City"; nocase; fast_pattern;
content:"System IT Inc";
content:"|55 04 03|";
content:"|06|server"; distance:1; within:7;
Raw source ET MALWARE REvil Exfil SFTP Certificate Inbound · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert ftp $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE REvil Exfil SFTP Certificate Inbound";
    flow:to_client,established;
    content:"Kanzas City"; nocase; fast_pattern;
    content:"System IT Inc";
    content:"|55 04 03|";
    content:"|06|server"; distance:1; within:7;
    reference:url,thedfirreport.com/2021/03/29/sodinokibi-aka-revil-ransomware/;
    classtype:targeted-activity;
    sid:2033205; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_06_30, deployment Perimeter, malware_family Ransomware, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_06_30, reviewed_at 2024_05_06;
)

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