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Reliable Contributor bodysoda
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Message 1 of 3

Help to block password protected zip files via ENS access protection rule

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I need suggestion/advice on how to use ENS Expert Rules to block password protected zip files being written to disk. 

We had an instance where users were able to bring in hacking tools which were zipped with password protected. I need to be ENS to block any encrypted *.zip /*.7z / *.RAR files uploaded. 

 

 

In case above information was useful or answered your question, please select "Accept as Solution" in my reply, or give a Kudo. Thanks!
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McAfee Employee jess_arman
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Message 2 of 3

Re: Help to block password protected zip files via ENS access protection rule

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@bodysoda Unfortunately, Access Protection is unable to differentiate as to whether the archive files have a password or not as AP blocks based on the defined process attempting to create a file with the extension matching what is defined in the rule. 

If you were to want to block these files, you would have to accept that the rule would block all *.zip/*.7z/*.rar files from being created. The only way that AP could differentiate is if the extensions differed due to encryption/password protection, or if a different process wrote password protected archives than non-password protected archives, and neither is the case.

Remember that AP is a process blocking feature, to block these file types being created, it's not blocking the file type directly, but blocking the defined process from being able to do a create/write action for a certain type of file in a certain directory.

 

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McAfee Employee jess_arman
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Message 2 of 3

Re: Help to block password protected zip files via ENS access protection rule

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@bodysoda Unfortunately, Access Protection is unable to differentiate as to whether the archive files have a password or not as AP blocks based on the defined process attempting to create a file with the extension matching what is defined in the rule. 

If you were to want to block these files, you would have to accept that the rule would block all *.zip/*.7z/*.rar files from being created. The only way that AP could differentiate is if the extensions differed due to encryption/password protection, or if a different process wrote password protected archives than non-password protected archives, and neither is the case.

Remember that AP is a process blocking feature, to block these file types being created, it's not blocking the file type directly, but blocking the defined process from being able to do a create/write action for a certain type of file in a certain directory.

 

Was my reply helpful?

If this information was helpful in any way, or answered your question, will you please select "Accept as Solution" in my reply, or give kudos as appropriate, so together we can help other members?

Reliable Contributor bodysoda
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Message 3 of 3

Re: Help to block password protected zip files via ENS access protection rule

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Thanks, @jess_arman for the explanation. 

Blocking all type of uncompressed files isn't ideal for operations teams.  I will look around for other solutions to see if I can achieve blocking password protected zip files. 

In case above information was useful or answered your question, please select "Accept as Solution" in my reply, or give a Kudo. Thanks!
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