Disc Soft Ltd - 0.565% Detection Rate *

Did you just run into a download or a file on your computer that is digitally signed by Disc Soft Ltd? If that's the case, please read on.

You will probably see Disc Soft Ltd when running the file. The publisher name is then displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

Screenshot where Disc Soft Ltd appears as the verified publisher in the UAC dialog

You can also view the Disc Soft Ltd certificate with the following steps:

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

Here's a screencap of a file signed by Disc Soft Ltd:

Screenshot of the Disc Soft Ltd certificate

As you can see in the screengrab above, Windows states that "This digital signature is OK". This implies that the file has been published by Disc Soft Ltd and that the file has not been tampered with.

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 examine the address for Disc Soft Ltd, such as the street name, city and country.

GlobalSign CodeSigning CA - G2, GlobalSign CodeSigning CA - SHA256 - G2 and COMODO RSA Code Signing CA has issued the Disc Soft Ltd certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screenshot above.

Disc Soft Ltd Files

The following are the Disc Soft Ltd files I have collected, thanks to the FreeFixer users.

The FreeFixer tool treats files from Disc Soft Ltd as safe, which means that the Disc Soft Ltd files will appear with a green background and that there is no removal checkbox for the file. However, as you can see in the scan results below, a few of the anti-virus scanners detects the Disc Soft Ltd file(s). My guess is that those detections are false positives and that the files are safe. It's unlikely that Disc Soft Ltd would ship a malware file.

Detection RatioFile Name
2/49sptd.sys
3/56sptd.sys
4/47sptd.sys
2/48sptd.sys
3/57sptd2.sys
2/47sptd.sys
1/48dtsoftbus01.sys
1/50DTAgent.exe
1/55DTAgent.exe
1/52SPTDinst-x64.exe
1/57dtusbsrv.exe
1/55Au_.exe
3/57DiscSoftBusService.exe
1/57sptd2.sys
1/54DTHelper.exe
3/57sptd2.sys
1/56Au_.exe
1/55DTShl32.dll
1/57DTShl64.dll
1/65DTLiteInstaller.exe
0/48DiscSoftBusService.exe
0/51dtsoftbus01.sys
0/48dtsoftbus01.sys

Scanner and Detection Names

Here is the detection names for the Disc Soft Ltd files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.

As mentioned above, I think these detections are incorrect since it is very unlikely that Disc Soft Ltd would ship a malware file.

ScannerDetection Names
BkavHW32.Nonim.aous, W32.HfsAdware.B4CC, W64.HfsAdware.B4CC
CMCPacked.Win32.TDSS.1!O
ClamAVWin.Trojan.Generic-453
ComodoUnclassifiedMalware
CyrenW32/S-c0a2b2fd!Eldorado
F-ProtW32/S-c0a2b2fd!Eldorado
KingsoftWin32.Troj.SysJunkT.hh
McAfeeGeneric Obfuscated.c
McAfee-GW-EditionGeneric Obfuscated.c, BehavesLike.Win32.Suspicious.vh
SymantecWS.Reputation.1
TrendMicroPAK_Generic.009
TrendMicro-HouseCallSuspicious_GEN.F47V0203, TROJ_GEN.F47V1004, PAK_Generic.009, Suspicious_GEN.F47V0130, Suspicious_GEN.F47V0520

* How the Detection Percentage is Calculated

The detection percentage is based on that I've gathered 6020 scan results for the Disc Soft Ltd files. 34 of these scan reports came up with some sort of detection. If you like, you can review the full details of the scan reports by examining the files listed above.

Analysis Details

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

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