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Folder hidding and replaced by exe

Created: 18 Jan 2013 | Updated: 26 Feb 2013 | 6 comments
arthrax's picture
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This issue has been solved. See solution.

 

Hello,

 

I have a  FAS2040 with cifs share.

On this share I have a virus that hide folder and replace them by .exe. I suspect one of my user who is infecting file. I need to find at least his IP address.

 

First I have enabled audit but it was not enough detailled.

 

Then to correct this issue, I have installed Symantec Protection Engine 7 and configured with my NetApp

 

Symantec is working well, I can see in NetApp with vscan command that Symantec is doing the job. But I have no entry at all for my hidding virus.

Do you know if there is an option in Symantec to monitor folder attribute with vscan ? I have make a lot of search but I'm unlucky.

 

Thank you.

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arthrax's picture

Hello,

I have read your thread and Symantec check all file, even hidden but not in my case. Also I scan a nas device, I think it is a different behaviour.

Here what happened :

  1. Virus hide my share folder on my nas and replace them by exe file
  2. I delete exe file and unhide file
  3. I activated Symantec Protection Engine
  4. After a few hours, virus come back with same behaviour on same shared file
  5. Nothing is seen by Symantec

For me, SPE do not check file attribute change or I haven't found the good option.

Thanks

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Ashish-Sharma's picture

 

Incase of suspicious activity still happening, then follow the steps provided in the Article below and submit the files to the Symantec Security Response Team:

Using Symantec Support Tool, how do we Collect the Suspicious Files and Submit the same to Symantec Security Response Team.

Thanks In Advance

Ashish Sharma

SEPM Knowledgebase Documents  

 

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BenDC's picture

What gets scanned is entirely determined by the netapp filer. It requests a scan and the scan engine will return a result to the scan engine. You can turn the logging levels up to verbose and see the scan engine results for all files in a detailed report, otherwise you will only see files the scan engine determines to be a threat or ecounters an error scanning a file.

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arthrax's picture

I have check NetApp options and there is nothing about hidden folder or folder attribute. I have confirmation with Netapp support

With verbose options I can see only creation of exe file :

Thu Jan 31 09:22:09 CET 2013, A file has been scanned Event Severity Level : Verbose File name : \\?\UNC\192.168.0.1\ONTAP_ADMIN$\vol\vol_datas\ERF.exe Client SID : S-1-5-21-2043879999-2266753580-3138237620-7629 Client Computer : LPT357 Client IP : 10.123.4.162 Scan Duration (sec) : 0.016 Connect Duration (sec) : 0.047 Symantec Protection Engine IP address : 192.168.8.47 Symantec Protection Engine Port number : 0 Uptime (in seconds) : 152899

Nothing about attribute change. So it means that I don't need Antivirus for NAS because NEtapp do not log this action.

Even if I make a manual scan with Symantec EndPoint Protection 11 Client on my computer to this exe file, nothing is found.

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arthrax's picture

I confirm that NetApp can't monitor folder ...

So finally I have resolved my issue but it was not easy :

  1. I have submit virus file to Symantec
  2. Virus was propagating faster so we decide to open a ticket with our Symantec contact commercial. No help at the beginning.
  3. We use other antivirus and Sophos detect the virus. It was a very old virus from 2007 in c:\setup
  4. We send this virus to Symantec with our contact
  5. A rapid release was made very quickly and after upgrading our client definition with Symantec Manager Console, no more virus
  6. 2 days after, I receive response from Symantec from my first submit in point 1 : Symantec EndPoint can detect it ....
  7. It takes 1 month to remove this virus.

I am disappointed by Symantec. I had to prove that it was really a virus and find the source to update the defintions of Symantec. Knowing that other less known antivirus had in their database. And i'm only a little customer with a fleet of 200 computers.

Anyway thank you for your help

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