Microsoft Windows SMB Fragmentation RPC Request (38663) Alerts

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Microsoft Windows SMB Fragmentation RPC Request (38663) Alerts

L4 Transporter

We are seeing a lot of Microsoft Windows SMB Fragmentation RPC Request alerts on our internal network since the updated SMB parser\signatures were released.

 

The (assumption!) is this is not an active evasion as it is widespread across our Windows systems, but are interested if this is a commonly triggered signature across the PA userbase?

 

Does anyone with network specialism know how best to identify what characteristics of the packets are actually triggering the alert?

 

Thanks

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