Tech Joy Co. - 4% Detection Rate *
Did you just run into a download or a file on your computer that has been digitally signed by Tech Joy Co.? Some of the security products refers to the detected files as PUA:Win32/TechJoyDown and PUA.Downloader. The detection rate for the Tech Joy Co. files collected here is 4%. Please read on for more details.
You'll typically see Tech Joy Co. when running the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screenshot shows:
You can also view the Tech Joy Co. certificate with the following steps:
- Open up Windows Explorer and locate the Tech Joy Co. file
- Right-click the file and select Properties
- Click on the Digital Signatures tab
- Click on the View Certificate button
Here is a screenshot of a file that has been digitally signed by Tech Joy Co.:
As you can see in the screenshot above, Windows reports that "This digital signature is OK". This implies that the file has been published by Tech Joy Co. and that the file has not been tampered with.
If you click the View Certificate button shown in the screenshot above, you can view 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 Tech Joy Co., such as the street name, city and country.
thawte SHA256 Code Signing CA and Thawte Code Signing CA - G2 has issued the Tech Joy Co. certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screenshot above.
Tech Joy Co. Files
The following are the Tech Joy Co. files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 11/71 | ExitPro_download.exe |
| 13/66 | gwave_kor_download.exe |
| 3/70 | Minecraft_1.5.2_download.exe |
| 5/66 | Adobe_PDF_Viewer_KR_download.exe |
| 1/72 | Gang_Beasts_download.exe |
| 0/55 | Galaxy_Image_download.exe |
Scanner and Detection Names
Here's the detection names for the Tech Joy Co. files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| Alibaba | Downloader:Application/Generic.716558f6 |
| CAT-QuickHeal | Trojan.Techjoydown, Trojan.IGENERIC |
| Cylance | Unsafe |
| Cyren | W32/Trojan.QXUN-3123, W32/Application.HHQL-5476 |
| ESET-NOD32 | Win32/TrojanDownloader.Agent.DOD |
| Fortinet | W32/Agent.DOD!tr.dldr |
| Ikarus | Trojan-Downloader.Win32.Agent |
| K7AntiVirus | Trojan-Downloader ( 0052c7e71 ) |
| K7GW | Trojan-Downloader ( 0052c7e71 ) |
| MAX | malware (ai score=89) |
| Malwarebytes | PUP.Optional.TechJoyDown.OL |
| McAfee | Artemis!4A9F7F74F4F1, Artemis!FFC391DC216E |
| McAfee-GW-Edition | Artemis |
| Microsoft | PUA:Win32/TechJoyDown |
| Rising | PUA.TechJoyDown!8.102A0 (CLOUD) |
| Sophos | Generic PUA CL (PUA), Mal/Generic-S, Generic PUA MF (PUA) |
| Symantec | PUA.Downloader |
| Tencent | Win32.Trojan-downloader.Agent.Eilf |
| TrendMicro-HouseCall | Suspicious_GEN.F47V0404 |
| Webroot | W32.Adware.Gen, W32.Trojan.Gen |
* How the Detection Percentage is Calculated
The detection percentage is based on that I've collected 795 scan reports for the Tech Joy Co. files. 33 of these scan results came up with some sort of detection. You can review 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:
- 149fb8ee039413ec67c81b0ff95c82c7
- 362042a82531c60c444eb2db49dc0a14