TEFINCOM S.A. - 1.7% Detection Rate *

Did you just run into a file that has been digitally signed by TEFINCOM S.A.? If that's the case, please read on.

You will probably see TEFINCOM S.A. when clicking to run the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screenshot shows:

Screenshot where TEFINCOM S.A. appears as the verified publisher in the UAC dialog

You can also view the TEFINCOM S.A. certificate with the following procedure:

  1. Open Windows Explorer and locate the TEFINCOM S.A. file
  2. Right-click the file and select Properties
  3. Click the Digital Signatures tab
  4. Click the View Certificate button

Here's a screenshot of a file digitally signed by TEFINCOM S.A.:

Screenshot of the TEFINCOM S.A. certificate

As you can see in the screenshot above, Windows reports that "This digital signature is OK". This means that the file has been published by TEFINCOM S.A. and that no one has tampered with the file.

If you click the View Certificate button shown in the screenshot above, you can see all the details of the certificate, such as when it was issued, who issued the certificate, how long it is valid, and so on. You can also examine the address for TEFINCOM S.A., such as the street name, city and country.

GlobalSign Extended Validation CodeSigning CA - SHA256 - G3 has issued the TEFINCOM S.A. certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screenshot above.

TEFINCOM S.A. Files

The following are the TEFINCOM S.A. files I've gathered, thanks to the FreeFixer users.

Detection RatioFile Name
7/69nssm.exe
7/70nssm.exe
0/68nordlwf.sys
0/68ndivert.sys
0/69ndivert.sys
0/71NordVPN.exe
0/70nordvpn-service.exe

Scanner and Detection Names

Here's the detection names for the TEFINCOM S.A. files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.

ScannerDetection Names
AhnLab-V3Unwanted/Win32.NSSM.R353938, Unwanted/Win32.NSSM.C2787861
Antiy-AVLRiskWare[RiskTool]/Win64.NSSM
Cybereasonmalicious.2aceb6, malicious.57305d
DrWebTool.InstSrv.10
RisingHackTool.NSSM!1.CABB (CLOUD), HackTool.NSSM!1.CABB (CLASSIC)
YandexTrojan.GenAsa!bPrxssdltbU, Riskware.NSSM!
ZonerTrojan.Win64.84488

* How the Detection Percentage is Calculated

The detection percentage is based on that I have collected 832 scan results for the TEFINCOM S.A. files. 14 of these scan results came up with some sort of detection. If you like, you can review the full details of the scan results by examining the files listed above.

Analysis Details

The analysis is based on certificates with the following serial numbers:

Comments

Jennifer Sun Bell writes

1 thumb

Thanks for sharing such useful information,

because none of us ever notice this smallest thing and how much this thing matters.

# 8 Aug 2020, 1:20

Roger Karlsson writes

0 thumbs

Thank you for the feedback Jennifer!

# 3 Sep 2020, 2:10

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