ET MALWARE Executable contained in DICOM Medical Image Received from PACS DICOM Device

alert tcp any [104,2104,22104] -> $HOME_NET any (
    msg:"ET MALWARE Executable contained in DICOM Medical Image Received from PACS DICOM Device";
    flow:established,to_client;
    content:"MZ"; within:2;
    byte_jump:4,58,relative,little;
    content:"PE|00 00|"; distance:-64; within:4;
    content:"DICM"; offset:128; depth:4; fast_pattern;
    reference:url,github.com/d00rt/pedicom/;
    reference:url,labs.cylera.com/2019/04/16/pe-dicom-medical-malware/;
    classtype:trojan-activity;
    sid:2027404; 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;
)