Hi Team,

Please suggest on it

We have SEP 12.1 but its not able to detect this virus

submit the file to security response.

https://submit.symantec.com/websubmit/essential.cgi

how did you got to know the file is threat?

What are you using to detect it? As suggested, you need to submit it to security response. You can use SymHelp to do this

Using Symantec Help (SymHelp) Tool, how to Collect the Suspicious Files and Submit the same to Symantec Security Response Team

http://www.symantec.com/docs/TECH203027

Hello,

If SEP not detect You can submit to file for submission.

Using Symantec Help (SymHelp) Tool, how do we Collect the Suspicious Files and Submit the same to Symantec Security Response Team.

https://www-secure.symantec.com/connect/articles/using-symantec-help-symhelp-tool-how-do-we-collect-suspicious-files-and-submit-same-symante

Is any other AV software is detecting it if any on one of your computer ?

Get the file location and submit it to Security response team as mentioned above

Hello,

TrojanDownloader:Win32/Stegvob.D is being detected by Microsoft.

https://www.virustotal.com/en/file/f1f6d360d672e909385ba877cb54c737a1ace13e66ababb53f5f101d76ec315b/analysis/

Whereas Symantec is detecting it as "WS.Reputation.1"

However, this file could be a new Variant.

Could you zip each of the files detected and submit the zip files (without password) to the Symantec Security Response Team on :

https://submit.symantec.com/websubmit/essential.cgi

We also offer a self-service site to analyze files, at http://www.threatexpert.com, which can give you more information on the files you submit to it.

What to do when you suspect that a Symantec AntiVirus product is not detecting viruses

http://www.symantec.com/docs/TECH99222

Also, check this Article:

Using Symantec Help (SymHelp) Tool, how do we Collect the Suspicious Files and Submit the same to Symantec Security Response Team.

https://www-secure.symantec.com/connect/articles/using-symantec-help-symhelp-tool-how-do-we-collect-suspicious-files-and-submit-same-symante

Hope that helps!!