ET MALWARE Executable contained in DICOM Medical Image SMB File Transfer

Query · suricata

flow:established,to_server;
flowbits:isset,ET.smb.binary;
content:"SMB"; depth:8;
content:"MZ"; distance:0;
content:"DICM"; fast_pattern; distance:126; within:4;

Rule dependencies

⚠ Higher-order rule. It fires on other rules' alerts, not on raw events, so it cannot fire on its own. Deploy the rules it depends on too.

Depends on

Raw source ET MALWARE Executable contained in DICOM Medical Image SMB File Transfer · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp any any -> $HOME_NET 445 (
    msg:"ET MALWARE Executable contained in DICOM Medical Image SMB File Transfer";
    flow:established,to_server;
    flowbits:isset,ET.smb.binary;
    content:"SMB"; depth:8;
    content:"MZ"; distance:0;
    content:"DICM"; fast_pattern; distance:126; within:4;
    reference:url,github.com/d00rt/pedicom/;
    reference:url,labs.cylera.com/2019/04/16/pe-dicom-medical-malware/;
    classtype:trojan-activity;
    sid:2027402; rev:1;
    metadata:affected_product Windows_Client_Apps, attack_target Client_Endpoint, created_at 2019_05_31, deployment Internal, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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