Tanja Matkovic - 12% Detection Rate *

Did you just find a download or a file on your computer that is digitally signed by Tanja Matkovic? Some of the security products refers to the detected files as PUP.Optional.OneClickDownloader.A and CoolMirage Ltd (fs). The detection rate for the Tanja Matkovic files collected here is 12%. Please read on for more details.

You will typically see Tanja Matkovic when clicking to run the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screenshot shows:

Screenshot where Tanja Matkovic appears as the verified publisher in the UAC dialog

You can view the additional details from the Tanja Matkovic digital signature with the following procedure:

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

Here is a screenshot of a file signed by Tanja Matkovic:

Screenshot of the Tanja Matkovic certificate

As you can see in the screenshot above, the Windows OS reports that "This digital signature is OK". This means that the file has been published by Tanja Matkovic and that no one has tampered with the file.

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, and so on. You can also view the address for Tanja Matkovic, such as the street name, city and country.

Thawte Code Signing CA - G2 has issued the Tanja Matkovic certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screenshot above.

Tanja Matkovic Files

These are the Tanja Matkovic files I've gathered, thanks to the FreeFixer users.

Detection RatioFile Name
4/4900000000
4/4800000001
4/4800000002
5/4800000003
12/5000000000
5/4800000000
6/48HDvid-codec-FF.exe
5/48BG.2013.warezltd.exe
5/50The_Ghosts_In_Our_Machine_2013_New_Releases_Full_HD_Movie_kazi4S_bbir.exe
4/48The_Hobbit_2_Desolation_of_Smaug_2013_English_Movie_PROMO_mp4.exe
9/4900000000
6/50Game_Of_Thrones_S03_Season_3_COMPLETE_720p_HDTV_x264_PublicHD.exe
7/50HDvid-codec-FF.exe
7/50Headway_Pre-Intermediate_3rd_Edition.exe

Scanner and Detection Names

Here is the detection names for the Tanja Matkovic files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.

ScannerDetection Names
AvastWin32:Oneclick-H [PUP]
ComodoApplicUnwnt
DrWebAdware.Yontoo.4
ESET-NOD32Win32/AdWare.1ClickDownload.AR
GDataNSIS.Adware.OneClickDownloader.B
KingsoftWin32.Troj.Generic.a.(kcloud)
MalwarebytesPUP.Optional.OneClickDownloader.A
McAfeeArtemis!15D6179DE294, Artemis!0651D0062F49
McAfee-GW-EditionArtemis!15D6179DE294, Artemis!0651D0062F49
Qihoo-360Win32/Virus.Adware.47b
RisingNS:Malware.Install!1.9F21
Sophos1 Click Downloader
TrendMicro-HouseCallTROJ_GEN.F47V1217, TROJ_GEN.F47V1218, TROJ_GEN.F47V1226, TROJ_GEN.F47V0303, TROJ_GEN.F47V0224, TROJ_GEN.F47V0117
VIPRECoolMirage Ltd (fs)

* How the Detection Percentage is Calculated

The detection percentage is based on the fact that I have collected 684 scan results for the Tanja Matkovic files. 83 of these scan reports came up with some sort of detection. If you like, you can view the full details of the scan reports by examining the files listed above.

Analysis Details

The analysis has been done on certificates with the following serial numbers:

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