One System Care Sp. Zo.o. - 53% Detection Rate *
Did you just stumble upon a download or a file on your computer that has a digital signature from One System Care Sp. Zo.o.? Some of the security products refers to the detected files as Adware.Agent.QWK and Adware.GenericKD.4050687. The detection rate for the One System Care Sp. Zo.o. files collected here is 53%. Please read on for more details.
You will probably see One System Care Sp. Zo.o. when double-clicking to run the file. The publisher name is then displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:
You can view additional details from the One System Care Sp. Zo.o. certificate with the following procedure:
- Open Windows Explorer and locate the One System Care Sp. Zo.o. file
- Right-click on the file and select Properties
- Click on the Digital Signatures tab
- Click the View Certificate button
Here's a screengrab of a file digitally signed by One System Care Sp. Zo.o.:
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 One System Care Sp. Zo.o. 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 examine the address for One System Care Sp. Zo.o., such as the street name, city and country.
thawte SHA256 Code Signing CA and COMODO RSA Code Signing CA has issued the One System Care Sp. Zo.o. certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screenshot above.
One System Care Sp. Zo.o. Files
The following are the One System Care Sp. Zo.o. files I've collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 37/57 | OneSystemCare.exe |
| 27/56 | SYSTEM~1.EXE |
| 25/56 | SYSTEM~1.EXE |
Scanner and Detection Names
Here's the detection names for the One System Care Sp. Zo.o. files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| ALYac | Adware.Agent.QWK, Adware.GenericKD.4050687 |
| AVG | Optimizer.BO |
| AVware | Trojan.Win32.Generic!BT |
| Ad-Aware | Adware.Agent.QWK, Adware.GenericKD.4050687 |
| AegisLab | Adware.Agent.Qwk!c, Adware.W32.Adposhel!c |
| Antiy-AVL | Trojan/Win32.TSGeneric, GrayWare[AdWare]/Win32.Adposhel |
| Arcabit | Adware.Agent.QWK, Adware.Generic.D3DCEFF |
| Avira | PUA/OptimizerPro.EL.8873 |
| BitDefender | Adware.Agent.QWK, Adware.GenericKD.4050687 |
| Bkav | W32.HfsAdware.E191 |
| CAT-QuickHeal | Pua.Adposhel |
| Comodo | Application.Win32.Agent.sdanv |
| CrowdStrike | malicious_confidence_85% (D), malicious_confidence_100% (D) |
| Cyren | W32/Adware.OEWC-1785 |
| DrWeb | Program.Unwanted.1518, Program.Unwanted.1747 |
| ESET-NOD32 | a variant of Win32/OptimizerEliteMax.E potentially unwanted, a variant of Win32/Adware.Adposhel.X |
| Emsisoft | Adware.Agent.QWK (B), Application.AdInstall (A) |
| F-Secure | Adware.Agent.QWK, Adware.GenericKD.4050687 |
| Fortinet | Riskware/OptimizerEliteMax |
| GData | Adware.Agent.QWK, Win32.Trojan.Agent.31IOKV, Adware.GenericKD.4050687 |
| Ikarus | AdWare.Agent |
| Invincea | virus.win32.parite.b, trojandownloader.win32.tugspay.a, trojan.win32.dacic.a!rfn |
| Jiangmin | RiskTool.SystemCare.a, AdWare.Adposhel.v, AdWare.Adposhel.q |
| K7AntiVirus | Adware ( 004cc9ef1 ), Adware ( 0050179e1 ), Unwanted-Program ( 004d381e1 ) |
| K7GW | Adware ( 004cc9ef1 ), Adware ( 0050179e1 ), Unwanted-Program ( 004d381e1 ) |
| Kaspersky | not-a-virus:AdWare.Win32.Adposhel.so, not-a-virus:HEUR:AdWare.Win32.Generic |
| Malwarebytes | Adware.OptimizerEliteMax |
| McAfee | Artemis!001F63107D60, Artemis!A9A528898712 |
| McAfee-GW-Edition | Artemis!PUP |
| MicroWorld-eScan | Adware.Agent.QWK, Adware.GenericKD.4050687 |
| Panda | Trj/CI.A, PUP/OneSystemCare, PUP/OptimizerPro |
| Qihoo-360 | Win32/Virus.IM.e37 |
| Rising | PUA.OptimizerEliteMax!8.755-xZW9tnYcyZI (cloud), Malware.Undefined!8.C-gSPjyfKAX8B (cloud) |
| Sophos | Generic PUA NC (PUA), Generic PUA PC (PUA), Generic PUA DM (PUA) |
| Symantec | SMG.Heur!gen, ML.Relationship.HighConfidence [Trojan.Gen.2], Trojan.Gen.2 |
| Tencent | Win32.Risk.Generik.Lorl, Win32.Adware.Adposhel.Szln |
| TrendMicro | TROJ_GEN.R03LC0EG116, TROJ_GEN.R023C0OAI17 |
| TrendMicro-HouseCall | TROJ_GEN.R03LC0EG116, TROJ_GEN.R023C0OAI17, TROJ_GEN.R00XH07A417 |
| VIPRE | Trojan.Win32.Generic!BT |
| ViRobot | Adware.Adposhel.952512[h] |
| Yandex | Riskware.Agent! |
| Zillya | Adware.Eorezo.Win32.28619, Adware.SystemCareCRTD.Win32.5538 |
* How the Detection Percentage is Calculated
The detection percentage is based on the fact that I've collected 169 scan results for the One System Care Sp. Zo.o. files. 89 of these scan results came up with some sort of detection. If you like, you can review the full details of the scan results by examining the files listed above.
Analysis Details
The analysis is done on certificates with the following serial numbers:
- 0a69e84edf6b5e2d6946887436c513b3
- 00d63dd9c7da551cf498102d2830f4460f