Add large IOC to block list

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Add large IOC to block list

L3 Networker

Guys, 

 

I need your help, I need to upload 500 IOCs to the block list.
Is there any option to upload IOCs in bulk or I have upload one by one?

Cortex XDR 

Best regards
Tiago Marques
6 REPLIES 6

L4 Transporter

Hi @tlmarques, thanks for reaching us using the Live Community.

 

When you create the IOC in Detection Rules -> IOC, you click on Add IOC and you have the option to upload many entries using a file, and you have a sample file to create it with the correct format.

 

jmazzeo_0-1727364798306.png

 

If this post answers your question, please mark it as the solution.

JM

Hi @jmazzeo 
but when i uploaded on IOCs , the IOC is not blocked, but only appear alerts on XDR correct??

Best regards
Tiago Marques

L3 Networker

I tested inserting IOCs marked as critical and with bad reputation. Cortex XDR automatically created multiple incidents/alerts, but the action taken was "detect" rather than "prevent," which is what I need.

Do you have any other suggestions on how to achieve this?

Best regards
Tiago Marques

The IOC list is only to for detection. If you need to block the hashes execution you need to add them to a Block List  under Incident Response - Response - Action Center -> Block List.

 

I highly recommend you the Alert Tuning webinar that was published in last April this year: https://live.paloaltonetworks.com/t5/cortex-xdr-webinars/cortex-xdr-customer-success-webinar-series-...

 

If this post answers your question, please mark it as the solution.

JM

Yes, as I mentioned... I need to upload 500 IOCs to block...
Is there a bulk process?
I don’t think so...

Best regards
Tiago Marques

Yes, you can add 100 at the same time from the console:

jmazzeo_0-1727462825197.png

Or you can use the API: https://cortex-panw.stoplight.io/docs/cortex-xdr/1a1950467783e-block-list-files

 

JM
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