Yu Bao - 21% Detection Rate *
Did you just find a download or a file on your computer that has a digital signature from Yu Bao? Some of the security products refers to the detected files as Gen:Variant.Graftor.284699 and a variant of Win32/ELEX.IB potentially unwanted. The detection rate for the Yu Bao files collected here is 21%. Please read on for more details.
You will probably see Yu Bao when clicking to run the file. The publisher name is displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:
You can view additional details from the Yu Bao certificate with the following procedure:
- Open up Windows Explorer and locate the Yu Bao file
- Right-click the file and select Properties
- Click the Digital Signatures tab
- Click the View Certificate button
Here is a screenshot of a file that has been digitally signed by Yu Bao:
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 Yu Bao 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, etc. You can also view the address for Yu Bao, such as the street name, city and country.
thawte SHA256 Code Signing CA has issued the Yu Bao certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screengrab above.
Yu Bao Files
The following are the Yu Bao files I've collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 12/56 | PWAVUE1UI.exe |
Scanner and Detection Names
Here is the detection names for the Yu Bao files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| ALYac | Gen:Variant.Graftor.284699 |
| Ad-Aware | Gen:Variant.Graftor.284699 |
| Arcabit | Trojan.Graftor.D4581B |
| BitDefender | Gen:Variant.Graftor.284699 |
| ESET-NOD32 | a variant of Win32/ELEX.IB potentially unwanted |
| F-Secure | Gen:Variant.Graftor.284699 |
| GData | Gen:Variant.Graftor.284699 |
| Ikarus | not-a-virus:Downloader.YeSearch |
| Kaspersky | UDS:DangerousObject.Multi.Generic |
| MicroWorld-eScan | Gen:Variant.Graftor.284699 |
| Qihoo-360 | HEUR/QVM10.1.Malware.Gen |
| Rising | Malware.Undefined!8.C-qyVXQ0Ty9IN (Cloud) |
* How the Detection Percentage is Calculated
The detection percentage is based on that I've collected 56 scan results for the Yu Bao files. 12 of these scan reports 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 is based on certificates with the following serial numbers:
- 37810f43e87bad7498043dc9d3a6f525