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mlajoie
Reliable Contributor
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Message 1 of 3

Powershell

Two questions.

1.  I'm trying to confirm if interactive PowerShell (ISE running non-saved script code and pasting full script code into the PowerShell command line/non-ISE) can be monitored and/or blocked with ENS 10.7?

2.  Is there an updated version of the paper:  

  • PowerShell>  Reducing the Attack Surface 
  • October 2017
    Version 1.0
    Jason Brown

If there is, please provide the download link.  I cannot tell if there is a new version.

 

Please advise.

Thank you.

2 Replies
Pravas
McAfee Employee
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Message 2 of 3

Re: Powershell

Hi @mlajoie ,

Thank you for your post.

1) I looked into the default Expert rules but couldn't find anything specific to Powershell ISE. You may test by creating a rule. Please refer to the guide below on expert rules.

https://kc.mcafee.com/corporate/index?page=content&id=KB89677

2) Sorry we do not have an updated version. Please refer the following KB's as well.

(i) Countermeasures for entry vector threats

https://kc.mcafee.com/corporate/index?page=content&id=KB91836

(ii) Best practices for tuning and using Endpoint Security to prevent and respond to threat incidents

https://kc.mcafee.com/corporate/index?page=content&id=KB94048

Thanks

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Re: Powershell

AMSI should cover ISE, so the contents are monitored with signatures and ML, as long as this is enabled. I can't think of any way to decipher a saved script file vs a pasted script, but, you are much more at risk of malware loading the .Net libraries needed for PowerShell, than a risk from ISE, in my opinion.

Dave

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