Solved.
Kudos1 Estadisticas

NortonSecurity.exe creates Virus-File during QuickScan

We are using Norton Internet Security (NIS) since more than 10 years now.
But what its doing now is really strange and customer service is not doing anything,
here are the details:

Since December 2021 we see the following Behaviour on all our by NIS protected Computers:
- (only) during quickscan a Virus-File is detected and deleted
- this virus file can be in few different folders of different custom apps (usually quickscan does not scan this partition, only full scan does)
- this virus file is named like 0001234.tmp (number changes every time) and has a size of 4712byte (always)
- this virus file is not a .tmp file of the custom app (sure), it seems to be an .exe file (content starts with "MZ....") of other origin
- this virus file contains a very strange text part at its end which is:
    "DUMPTHIN                        SPCK!it is a [(?riddle?) wrapped in a {mystery}] inside an enigma"
The Part "it is a riddle wrapped in a mystery inside an enigma" is how famous Winston Churchill defined Russia in 1939
(When I read this it seemed clear that this file was a threat and not a regular computer file)
A check of the file with other Virus tools proved that too.

Why would I think NortonSecurity.exe creates this File ?
- only Computer protected by NIS are affected
- we saw early that the File nevery really exists, at not time it is or was there (sure)
   it only pops up when a quickscan is started and is removed by that at the same time.
- we also had monitoring software running which shows exactly what was suspected (see screenshot):
> NortonSecurity.exe first looks if a file by that name already exists (?)
> then creates it (!)
> then writes its content of 4712bytes (!)
> ...?
> then deletes it (!)
> then checks if the file is really gone (???)
(all this happens within about 0.01seconds)

What is extra strange about it ?
- not by NIS protected Computers are not affected
- it was not that easy (like it usually always was) to restore the file (like when its not a virus),
  i could click on it and it was confirmed but the file was not there ! It was not restored.
- uploading the file to Norton Support via website ended unanswered (1 Month)
- transimitting the file to Norton Support via App itself 10times ("send file to norton") ended unanswered (file not received)
(they never informed me that the file was not received - this just came up during later conversation)
- then they wanted the file by email (which is impossible even I know that you can't send a virus by email) so I suggested to have it password protected and zipped (to avoid scanning / removing on the way) which got through (confirmed) but still no answer about it
- Norton Customer Support is acting really strange they ask more questions (like "how do you know that ?") then they answer
but of course they are assuring me that the file can never be created by Norton and that I have to "trust them".
An actual proof of that was not given. About my proof they don't really care.
They only say, "please wait for answer" which I do since 1 Month now.
- When Norton Customer Support is out of answers they sometimes say that the "file might not be a threat" but thats out of the questions when you see that it comes up again and again and nobody knows why.
- my norton community access of that account is somehow blocked all the time (could just be coincidence of course) so I use a different account.

About the file or content I could find few Infos in the Internet.
Virustotal said its from early December 2021 but some users wrote about it in 2013 already.
So I really don't know what I should think about this situation.

Any Help is Appreciated

Solución aceptada
Kudos3 Estadisticas

Re: NortonSecurity.exe creates Virus-File during QuickScan

Hello @Nicommander,

Our product team has completed the analysis.

These temporary files are created by the product in some scenarios when suspicious sections of memory are encountered. This specific file was reviewed and confirmed to not contain anything malicious.

These files are created in the same directory as the app where the memory was detected in some scenarios to maintain that association. Creation and removal is handled automatically by the product during the scan so there's no need to manually remove these files.

While these temporary files look like executables from their headers these are not executable or able to adversely affect the system in this form. Detections attributed directly to these files are not intended and while this instance has been fixed, we're working to make sure they don't happen in any further scenarios.

Respuestas

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

You mention NIS. Are you still on the legacy Norton Internet Security, or are you using the current Norton 360 products.

Did this behaviour just start in December, or did you just start tracking it then? What app are you using to track this?

If Norton is creating .tmp files, it is not creating a virus. This is probably just part of the way Norton sandboxes an app so it can check for its behaviour to see if it is malware. As you note, these files are created and then deleted. Most people do not know what this is about, because most people do not try to dig into the inner workings of their AV product. 

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

Norton Internet Security behaviour just started in December Tracking with processmonitor If it’s a regular file from norton then why is Norton (and also other scanners) detecting the file as Trojan virus ? Also Norton has its own temp folder to do what is necessary. It’s not ok to write files in some app folder. This would also never cause the app to react especially if the file is only there for A microsecond. If I try to open the file Norton deletes it right away because it’s a virus (so it says !). Also the content of the file shows that it’s Not a regular file. Also Norton could have said so. Also all the other strange things that I mentioned above. PS: after more than 10years I do know how My norton works. Otherwise I could not have found all these Irregularities. Over the years it protected us well from every threat I know. That makes it so hard to see that this problem is handled so poorly from customer service. Even my community access seems to be blocked (I told customer service I was going public) I have no explanation for all that. So far no useful help from customer service since one month

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

Your image blanks out the file locations. Where is Norton creating these files?

I do not see anything in your image that Norton is indicating these are virus files? Where did you get this information? Are you seeing entries in Norton History for detected virus?

You did not clarify just what Norton product you are using. Is it the older NIS or the newer 360?

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

I already said that it’s Norton Internet Security (Not 360) But that would not matter since the engine is updated. The folder name is blanked because its a custom app and a custom folder. The name has nothing to do with the problem. It also happened in some other folders so the name does not matter. Norton detects the file as Trojan Virus and calls it a threat otherwise I would have never found it. So did other scanners like Virustotal. It’s also in the norton history every time. The picture is a screenshot from the processmonitor which will of course not show or tell that the file is a virus because the processmonitor Is not a virus scanner but just a monitoring tool. PS: It was almost sure that the file had to be created by nis even before the actual proof with the processmonitor because if you know how nis works then you know that nis monitors all disk read / write operations. So it’s not possible to open a virus file As user because nis will prevent that (it did that here too). Also it would detect the file as soon at it Had been written on the disk. That happens for example when you download a file that contains malware - it’s deleted right away. But That never happened with this particular file because the file was never created .... not until the quick scan has been started. So it could only be the nis itself. No other program could have written the file on the disk without nis (or me) to see and detect it. The only question is why is norton doing this and how do I stop it. Customer service seems not aware of the problem or is just hiding the cause of this strange “procedure”

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

Custom app and folder. Are you a developer creating this app?

The other folders, are they also custom or are they for a regular program we all might use? 

What information about this detection is noted in the Norton History?

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

Yes this app and the others are custom apps that we created and That only we use. So to norton these apps are used only by very few users. However our apps do not create the Virus files or any files like that at all. As usual norton does not offer any real information about any threat that it detected. You can only see the file name and type of threat which in this case was Trojan.

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

PS: there are hundreds of other and similar custom apps / folders on our computers. So no reason why these are special.
Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

If you are developing your own apps, you need to exclude the folders and all sub folders for these apps from Both items in the image below. 
 

Try that and then see if you still get these entries for Norton creating and deleting the temp files. I still believe that this is just Norton trying to open the files so it can look for malicious activity from them. So instead of using the original file, Norton creates the .tmp file to test.


 

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

I know that option and still its not a solution. Just because our apps are custom apps Does not make them any different. Just like other apps they can be infected by viruses too. So scanning them is still the job of the nis. Excluding all folders of custom apps would really not be a good idea because we have hundreds of them. Also we have then since 10years. So why would they be a problem just now ? It really makes no sense at all what norton is doing here and why they pretend not to know anything about it. That’s just really stupid behavior and very rude to paying customers. I do not understand what you mean by Norton is testing something using these files. How should that work ? I’m a developer too and that’s not how it works. Not at all.
Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

The support staff work from scripts to help solve 'normal' issues with working with the Norton programs. Those scripts are not going to go into the details of how Norton does their 'magic', so it is not surprising you find Support unable to answer your questions.

I too am just a user and am suggesting what I feel is happening. Norton is never going to create any virus files on a user's computer. There is some explanation as to why Norton is creating all those tmp files during a scan. And my sand boxing suggestion is all I can come up with. 

Maybe others here might have some more insight for you.

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

as test: I'm scrolling Process Monitor screen while Norton is scanning. 

Does path with .tmp extension during scan mean "infection"? 

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

Norton Customer Service is a big machine so I know that the person in the chat will not solve it, but the problem was forwarded to other Personal like technicians and so one could expect that after 1 month there is any form of valid answer, but there isn’t.

Also they provide info about any infected file within 48h but still I got no answer. So it seems they are hiding something. It’s just too obvious. Why do people still say it’s not like it looks ...? The proof is speaking for itself, you can not manipulate the process monitor. I too do not want to believe it but I have to.

Norton creates .tmp files all the time but usually it does that where it is supposed to be > in the temp folder. And they only are a virus if norton says so, which in my case is happening (other software tells so too). So nobody needs to be scared about all .tmp files. They are harmless until any antivirus software tells you otherwise, or until they appear where they’re not supposed to be (like in my case).

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

Norton has now marked the File as not malicious

I really can not believe this.

Here is the VirusTotal Report from today:

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

Nicommander:

Also they provide info about any infected file within 48h but still I got no answer.

If you've made submission/s thru submit.norton.com.  Please know that the Submission status:/details: does/may not update. It's a known bug.   If you post Submission ID/s.  We can try to call attention to get submission update. 

https://submit.norton.com/?type=CHECK&submission_id=

My apologies.  Maybe, I'm not fully understanding your concerns.  

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

Nicommander:

Norton creates .tmp files all the time but usually it does that where it is supposed to be > in the temp folder. And they only are a virus if norton says so, which in my case is happening (other software tells so too). So nobody needs to be scared about all .tmp files. They are harmless until any antivirus software tells you otherwise, or until they appear where they’re not supposed to be (like in my case).

 

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

I did not know (because norton told me to check status there)

I made a new submission today details see here:

Submission ID:

fa5aa30e-cb27-4847-86c9-f8f3de765fe7

https://submit.norton.com/?type=CHECK&submission_id=fa5aa30e-cb27-4847-86c9-f8f3de765fe7

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

Yes I have see these too.

But these are real norton temp files, which may have any temporary content.
The size is different than 4712 bytes
These are also in the correct location.

My files where in Folders where they do not belong (not part of the app in that folder, not part of temp folder, not part of norton folder).
And they were detected as Virus (by Norton any other Scanners).
Also the files had suspicious content. So completely different.

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

Nicommander:

I did not know (because norton told me to check status there)
I made a new submission today details see here:
Submission ID:  fa5aa30e-cb27-4847-86c9-f8f3de765fe7

Okay.  We'll try to call attention to get submission update. 

@Nicommander
Edit: Okay....your Submission status: does appear to have updated.

I was referring to for example:  my submission from yesterday 20-Jan-2022 that has changed (detection was removed) but submission continues to report Submission status: Your submission is being processed

https://submit.norton.com/?type=CHECK&submission_id=ed9e10d7-bb4d-47e1-ad37-365fd31f773e

Thanks 

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

Nicommander:

Yes I have see these too.
But these are real norton temp files, which may have any temporary content.
The size is different than 4712 bytes
These are also in the correct location.
My files where in Folders where they do not belong (not part of the app in that folder).
And they were detected as Virus (by Norton any other Scanners).
Also the files had suspicious content. So completely different.

Thanks for helping me understand your scenario.   

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

I can only guess that norton was doing monkey business here.
- Using our Computers
And
- Using our Time
to try out anything or find out anything or see how we react or I don't know.
However this caused us a lot of trouble and sleepless nights too.
Thats not how a computer should work. My Trust in Norton is badly damaged.

Also we were putting more than 100 working hours into that Problem (only until we found out its made by norton).

So now somebody (who has obviously caused the problem) has to pay for the damage.

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

Status has changed, I will make new scan in 24 hours to see whats done.
(I wonder why there is no answer in the status, like is it a threat or not, will it be detected again or not - was it false negative or not - just nothing)

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

We have escalated your issues to our contacts who confirm they are looking at the issues you are reporting. Someone should be reaching out to your when they figure out what is happening. Yours is the only notification they have had for this.

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

I’ve been in contact with customer service for one month and so far they told me the same thing 10 or more times and so far absolutely nothing happened. Not a single thing they promised really happened !!! Not a single useful information was given to me. Instead all they wanted to know is like „how could you find that out ?“ (yeah I caught you and saw your monkey business) Now they simply declared the file harmless which it really isn’t, the whole thing is a big lie beginning with my favorite sentence „you’re the only person with this problem“ - I really can not hear that anymore. What do you think this sentence should tell me ? I don’t really know why people keep saying this ... Just stop it. Because it’s totally rude. I know I’m not the only person with this problem - I might just be the only person that caught you doing it. What happened had to be described with this: It’s not a bug - it’s a feature ! So please stop fooling your customers. You are about to loose some of them just because you like to use your customers and their computers for your own profit. We have to pay the price which is not ok. Over 100working hours were used to Identify and try to solve the problem but a feature can not be "solved". Just to find out that the source of this so called „problem“ is norton itself. So who‘s paying for that ? My trust in norton is badly damaged. I really hope that many people will read this and start looking closer to what norton is doing on their computers.

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

Norton is no longer detecting the file as threat anymore. Other scanners detect it as malicious. Still no official answer about the case.
Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

Hello @Nicommander, our product teams are investigating the issue you have reported and we will have the response for you in the next couple of days, by the next Monday at the latest.

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

What answer could that be ? The file is harmless now ? I just told you that it’s not harmless ! ! ! So you should have a better answer, one that also explains why norton created the file so many times on our Computers ! This not only fooled us it also cost us more than 100working hours so you better have a good idea how to compensate this (after you answered all the questions).

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

Here is the Link to the VirusTotal Result:
https://www.virustotal.com/gui/file/4251d87101b0af851b4401672f062ddfc3397c6b1850de2cbd66cea11d95eec3

There is also says that it's a: Executable File

Kudos0

Re: NortonSecurity.exe creates Virus-File during QuickScan

Now 29 / 66 security vendors and no sandboxes flagged this file as malicious !
(before it was 28 / 66 )

Solución aceptada
Kudos3 Estadisticas

Re: NortonSecurity.exe creates Virus-File during QuickScan

Hello @Nicommander,

Our product team has completed the analysis.

These temporary files are created by the product in some scenarios when suspicious sections of memory are encountered. This specific file was reviewed and confirmed to not contain anything malicious.

These files are created in the same directory as the app where the memory was detected in some scenarios to maintain that association. Creation and removal is handled automatically by the product during the scan so there's no need to manually remove these files.

While these temporary files look like executables from their headers these are not executable or able to adversely affect the system in this form. Detections attributed directly to these files are not intended and while this instance has been fixed, we're working to make sure they don't happen in any further scenarios.

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