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L3 Networker

Hi Team,

 

How can I create a BIOC rule for large upload activities of more than 1 GB of data in external storage? Please share your input.

1 REPLY 1

L2 Linker

Hi,

 

Thanks for reaching our Live Community.

 

For this, I would recommend a correlation rule instead, you can use the below query as an example (you will need to modify it to fit your needs):

 

dataset = xdr_data
| filter event_type = ENUM.NETWORK and action_external_hostname in ("mail.google.com", "drive.google.com", "etc... any additional external resource you need to add")
| bin _time span=1d
| comp sum(action_total_upload) as uploaded_bytes, values(action_external_hostname) as domain_names by agent_hostname, actor_effective_username, _time
| filter uploaded_bytes > 1000000000

 

The below link shows you how to create a correlation rule:

 

https://docs-cortex.paloaltonetworks.com/r/Cortex-XDR/Cortex-XDR-Pro-Administrator-Guide/Create-a-Co...

 

If this solution solves your inquiry, please mark it as solved.

 

Regards.

Visit our Cortex XDR Customer Corner on Live Community to access resources for your product journey, engage in discussions with community members and subject matter experts, and register for upcoming events: Cortex XDR Customer Corner
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