ET MALWARE Valyria Downloader Activity

Query · suricata

flow:established,to_client;
file.data;
content:"|5c|Temp|5c|regles2.cmd|22|"; fast_pattern;
content:"|5c|Temp|5c|CMSTPBypass.exe"; distance:0;
content:"|5c|Temp|5c|regles.cmd"; distance:0;
Raw source ET MALWARE Valyria Downloader Activity · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Valyria Downloader Activity";
    flow:established,to_client;
    file.data;
    content:"|5c|Temp|5c|regles2.cmd|22|"; fast_pattern;
    content:"|5c|Temp|5c|CMSTPBypass.exe"; distance:0;
    content:"|5c|Temp|5c|regles.cmd"; distance:0;
    reference:url,twitter.com/James_inthe_box/status/1409980230379311105;
    reference:md5,4f8c9ac36ca0268eb7c9ccec4f9d76f5;
    classtype:trojan-activity;
    sid:2033206; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_06_30, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_06_30;
)

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