Dynabook Inc. - 0.255% Detection Rate *

Did you just download a file that has a digital signature from Dynabook Inc. and wonder if the file is safe? If that's the case, please read on.

You'll typically see Dynabook Inc. when running the file. The publisher name is then displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

Screenshot where Dynabook Inc. appears as the verified publisher in the UAC dialog

You can view the digital signature details for Dynabook Inc. with the following procedure:

  1. Open up Windows Explorer and locate the Dynabook Inc. file
  2. Right-click on the file and select Properties
  3. Click on the Digital Signatures tab
  4. Click the View Certificate button

Here is a screengrab of a file that has been digitally signed by Dynabook Inc.:

Screenshot of the Dynabook Inc. certificate

As you can see in the screenshot above, Windows states that "This digital signature is OK". This implies that the file has been published by Dynabook Inc. and that no one has tampered with the file.

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

Symantec Class 3 SHA256 Code Signing CA and DigiCert SHA2 Assured ID Code Signing CA has issued the Dynabook Inc. certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screenshot above.

Dynabook Inc. Files

These are the Dynabook Inc. files I've gathered, thanks to the FreeFixer users.

Detection RatioFile Name
1/71DSDFunctionKeyCtlService.exe
1/72DSDFunctionKeyCtlService.exe
1/69DSDFunctionKeyCtlService.exe
0/73rmservice.exe
0/71tossrvctldrv.sys
0/73tvalz_o.sys
0/66DSDFunctionKeyCtlService.exe
0/69tossrvctldrv.sys
0/70thpevm.sys
0/66tossrvctldrv.sys

Scanner and Detection Names

Here's the detection names for the Dynabook Inc. files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.

ScannerDetection Names
JiangminDownloader.AdLoad.zn

* How the Detection Percentage is Calculated

The detection percentage is based on that I have collected 1176 scan reports for the Dynabook Inc. files. 3 of these scan reports came up with some sort of detection. You can view the full details of the scan results by examining the files listed above.

Analysis Details

The analysis has been done on certificates with the following serial numbers:

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