• All Community
    • All Community
    • Forums
    • Ideas
    • Blogs
Advanced

Not what you are looking for? Ask the experts!

This forum thread needs a solution.
Kudos0

virus detection on NAS backup, not picked up by Norton?

recently did a major backup and system image to my Synology NAS. Afterwards ran a virus scan on the system using Synology software and it apparently picked up two trojans and quarantined them. Concerned that these may be on my system, I ran Norton but it did not pick them up, also specified file path which didn't help detection. Tried googling and nothing there which helped. Wondered if anyone could help on here with advice, posting as a newbie.

Threats named win.trojan.agent-5497009-0 and win.trojan.agent-1372533

Any help or information greatly appreciated

J

Labels: Virus, Windows 7

Replies

Kudos0

Re: virus detection on NAS backup, not picked up by Norton?

Submit the files to Virustotal.com and see if other AV products are detecting it as malware. All AV scanners can have false positives. 

Did you have the Synology AV software installed at the same time as Norton? That could cause strange behavior in either software. You should only have one real time scanner installed at a time, and fully remove it with the removal utility for that software before installing another.

Things happen. Export/Backup your Norton Password Manager data.
Kudos0

Re: virus detection on NAS backup, not picked up by Norton?

Thanks for taking the time to reply and apologies in advance for my limited understanding. To be clear, I ran the Synology AV on the backup and system image after I had put them on the NAS. When it (apparently) picked up these trojans I ran Norton on my PC to check the files on the HDD as I presumed they would be picked up there, and then became concerned when it didn't pick them up. So as I understand it the AV software are running on different systems, Norton on my PC and Synology on the NAS.

I haven't heard of virustotal.com and wouldn't be sure how to do that, is it something that you have to pay for? And why wouldn't Norton have picked up these trojans?

Many thanks for your help

J

Kudos0

Re: virus detection on NAS backup, not picked up by Norton?

I haven't heard of virustotal.com and wouldn't be sure how to do that, is it something that you have to pay for? 

It is free. Just go to the web site and you can upload the questionable file to the site. 

And why wouldn't Norton have picked up these trojans?

It depends on the specific infection found. Many are just PUPs, a Possibly Unwanted Program. While they are annoying, they do not cause damage to your system. Some people actually want the 'Features' offered by these programs. They are usually downloaded alongside a legitimate download when you do not uncheck the option for the additional download.

Norton products concentrate on malware that can damage your system, that is why some PUPs are not detected.

And no single AV product can protect 100% of the time from 100% of the tens of thousands of malware variants released every day.

Things happen. Export/Backup your Norton Password Manager data.
Kudos0

Re: virus detection on NAS backup, not picked up by Norton?

Thank you very much for taking the trouble to reply and for your explanation and apologies for not responding more quickly. I think they are probably, as you say, just PUP's.

Once again, thank you

Kudos0

Re: virus detection on NAS backup, not picked up by Norton?

Newbie here.  After purchasing Norton CORE Router, as well as incorporating current subscription of Norton Internet Security, I'm considering purchase of either QNAP or SYNOLOGY NAS.  

My question, after following this thread is: How well does Norton CORE interface with NAS in general - especially when NAS is set up at a personal cloud for remote access?

Thanks.....

This thread is closed from further comment. Please visit the forum to start a new thread.