XDR on-write exclusions

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XDR on-write exclusions

L4 Transporter

Hi,

 

Is it possible to exclude certain executables and their hashes from on-write protection on Cortex XDR ??

Best regards
Tiago Marques
1 accepted solution

Accepted Solutions

L5 Sessionator

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

 

There is no possibility to create an exclusion for the On-Write protection itself. This module detects when a new file is writed on disk, and then starts the usual file analysis flow:

 

jmazzeo_2-1709833376722.png

 

Then you have two options:

  • If a file is blocked and you need to allow it, check which module is blocking it and then create the exception for that module under Settings - Exceptions Configuration.
  • Create an Administrative Hash exception, going to Settings - Exceptions Configuration - Disable Prevention Rules, and adding a new rule with the file hash and selecting "Hash Control" as the module.

jmazzeo_3-1709833513289.png

 

Please let me know how it goes.

 

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

JM

View solution in original post

4 REPLIES 4

L5 Sessionator

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

 

There is no possibility to create an exclusion for the On-Write protection itself. This module detects when a new file is writed on disk, and then starts the usual file analysis flow:

 

jmazzeo_2-1709833376722.png

 

Then you have two options:

  • If a file is blocked and you need to allow it, check which module is blocking it and then create the exception for that module under Settings - Exceptions Configuration.
  • Create an Administrative Hash exception, going to Settings - Exceptions Configuration - Disable Prevention Rules, and adding a new rule with the file hash and selecting "Hash Control" as the module.

jmazzeo_3-1709833513289.png

 

Please let me know how it goes.

 

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

JM

@jmazzeo how i can check which module is blocking ??

Best regards
Tiago Marques

You can check in causality chain. Information Overview

Looks like I missed this reply...

You can do it as @P.Ghule mentions, or by adding the "Module" column in the Alerts View.

 

jmazzeo_0-1732036236038.png

 

JM
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