ET HUNTING SUSPICIOUS SMTP Attachment Inbound PPT attachment with Embedded OLE Object M5

Query · suricata

flow:established,to_server;
content:"cHQvZW1iZWRkaW5ncy9vbGVPYmplY3";
Raw source ET HUNTING SUSPICIOUS SMTP Attachment Inbound PPT attachment with Embedded OLE Object M5 · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert smtp $EXTERNAL_NET any -> $SMTP_SERVERS any (
    msg:"ET HUNTING SUSPICIOUS SMTP Attachment Inbound PPT attachment with Embedded OLE Object M5";
    flow:established,to_server;
    content:"cHQvZW1iZWRkaW5ncy9vbGVPYmplY3";
    classtype:misc-activity;
    sid:2019410; rev:2;
    metadata:created_at 2014_10_15, confidence Medium, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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