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Why only one event message is generated although the event did occure more than once?

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Helo guys,

I need to prepare policies for bash.exe to be allowed but every single execution should be reported.

I removed bash.exe from PUP list and created an access protection policy with "report" rule for bash.exe.

If I execute the bash.exe from desktop for first time, event message is generated. However if execute bash.exe second, third, fourth...time, the new event messages are not generated anymore.

The same, if I move bash.exe to new folder, event message is generated only for the first run attempt. There are no event messages generated for the other execution attempts.

 

 

AccessProtection_Activity log:
11/18/2019 2:28:52 PM   mfeesp(6456.16172) <SYSTEM> ApBl.AP.Activity: XXX ran C:\Users\xxx\Downloads\dnes\McAfee\FS showed as MOVE\bash.exe, which accessed the file C:\Users\xxx\Downloads\dnes\McAfee\FS showed as MOVE\bash.exe, violating the rule "Warn execution of bash.exe". Access was allowed because the rule wasn't configured to block.
11/18/2019 2:29:06 PM   mfeesp(6456.11860) <SYSTEM> ApBl.AP.Activity: XXX ran C:\Users\xxx\Desktop\bash.exe, which accessed the file C:\Users\xxx\Desktop\bash.exe, violating the rule "Warn execution of bash.exe". Access was allowed because the rule wasn't configured to block.
11/18/2019 3:33:18 PM   mfeesp(6456.10204) <SYSTEM> ApBl.AP.Activity: XXX ran C:\Users\xxx\Downloads\bash.exe, which accessed the file C:\Users\xxx\Downloads\bash.exe, violating the rule "Warn execution of bash.exe". Access was allowed because the rule wasn't configured to block.
11/18/2019 3:35:08 PM   mfeesp(6456.14388) <SYSTEM> ApBl.AP.Activity: XXX ran C:\Users\xxx\Downloads\Zaloha\bash.exe, which accessed the file C:\Users\xxx\Downloads\Zaloha\bash.exe, violating the rule "Warn execution of bash.exe". Access was allowed because the rule wasn't configured to block.

 

From each location I ran bash.exe 3-4 time, at different time. But only the first rum/execution is logged.

 

1) can you explain the behavior ? How to get event messages for every execution attempt ?

2) is access protection rule good solution or shall I configure different policy to get I want ?

Workstation OS: Windows 10

ENS: 10.6.1.1666

Agent 5.6.1.308

Please advise. Thank you.

 

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McAfee Employee
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Re: Why only one event message is generated although the event did occure more than once?

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This is because of event throttling where in a second event is not generated with exactly same properties as the first event for 5 minutes. This is expected behavior.
 
If you want to get event messages for every execution attempt, try to create an ENS Exploit prevention expert rule. You may need to get used to the syntax to create ENS Exploit prevention expert rule. Refer exploit prevention expert rule guide.
 
 
 
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McAfee Employee
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Re: Why only one event message is generated although the event did occure more than once?

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This is because of event throttling where in a second event is not generated with exactly same properties as the first event for 5 minutes. This is expected behavior.
 
If you want to get event messages for every execution attempt, try to create an ENS Exploit prevention expert rule. You may need to get used to the syntax to create ENS Exploit prevention expert rule. Refer exploit prevention expert rule guide.
 
 
 
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?

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McAfee Employee
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Re: Why only one event message is generated although the event did occure more than once?

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Reiterating this is expected behavior for Access protection events.

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