US Tech Support LLC - 1.9% Detection Rate *
Did you just download a file that has been digitally signed by US Tech Support LLC and wonder if the file is safe? If that's the case, please read on.
You will typically see US Tech Support LLC when double-clicking to run the file. The publisher name is displayed as the "Verified publisher" in the UAC dialog as the screencap shows:
You can also view the US Tech Support LLC certificate with the following steps:
- Open up Windows Explorer and locate the US Tech Support LLC file
- Right-click the file and select Properties
- Click on the Digital Signatures tab
- Click the View Certificate button
Here is a screenshot of a file that has been digitally signed by US Tech Support LLC:
As you can see in the screenshot above, Windows states that "This digital signature is OK". This means that the file has been published by US Tech Support LLC 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 see the address for US Tech Support LLC, such as the street name, city and country.
VeriSign Class 3 Code Signing 2010 CA and Symantec Class 3 SHA256 Code Signing CA has issued the US Tech Support LLC certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screenshot above.
US Tech Support LLC Files
These are the US Tech Support LLC files I have collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 1/54 | MyCleanPC (2).exe |
| 3/56 | ROBoot64.exe |
| 3/54 | ustspcodefragsrv64.exe |
| 0/47 | schedulerservice.exe |
| 0/55 | ustspcodefragsrv64.exe |
| 0/54 | schedulerservice.exe |
| 0/55 | DEL_dll.dll |
Scanner and Detection Names
Here is the detection names for the US Tech Support LLC files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| AVG | MyCleanPC.512, Optimizer.18F |
| AegisLab | Optimizer.Gen!c |
| DrWeb | Program.Unwanted.48, Program.Unwanted.1335 |
| ESET-NOD32 | a variant of Win64/Systweak.A potentially unwanted |
| Jiangmin | Trojan/Tweaker.n |
* How the Detection Percentage is Calculated
The detection percentage is based on that I have gathered 375 scan reports for the US Tech Support LLC files. 7 of these scan results came up with some sort of detection. You can view the full details of the scan reports by examining the files listed above.
Analysis Details
The analysis is done on certificates with the following serial numbers:
- 13915e423bf9f5175399a633ca464dfd
- 4dccd79dbe6c589555efb3fe7b9907a5
- 71ee5a8a09540a3a629cc8f4c4ea54cf