ET MALWARE Skeleton Key Filename in SMB2 Traffic

Query · suricata

flow:established,to_server;
content:"|FE|SMB|40|"; offset:4; depth:5;
content:"|16 00|"; distance:0;
content:"m|00|s|00|u|00|t|00|a|00|6|00|4|00|.|00|d|00|l|00|l"; distance:8; within:21;
Raw source ET MALWARE Skeleton Key Filename in SMB2 Traffic · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $HOME_NET any -> $HOME_NET [139,445] (
    msg:"ET MALWARE Skeleton Key Filename in SMB2 Traffic";
    flow:established,to_server;
    content:"|FE|SMB|40|"; offset:4; depth:5;
    content:"|16 00|"; distance:0;
    content:"m|00|s|00|u|00|t|00|a|00|6|00|4|00|.|00|d|00|l|00|l"; distance:8; within:21;
    reference:url,www.secureworks.com/cyber-threat-intelligence/threats/skeleton-key-malware-analysis;
    classtype:trojan-activity;
    sid:2020382; rev:5;
    metadata:created_at 2015_02_07, signature_severity Major, updated_at 2019_07_26;
)

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