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Web Cake - 38% Detection Rate *

Did you just find a download or a file on your computer that has a digital signature from Web Cake? Some of the security products refers to the detected files as Yontoo (fs) and Win32:Webcake-A [Adw]. The detection rate for the Web Cake files collected here is 38%. Please read on for more details.

You will typically notice Web Cake when clicking to run the file. The publisher name is displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

Screenshot where Web Cake appears as the verified publisher in the UAC dialog

You can view additional details from the Web Cake certificate with the following procedure:

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

Here's a screenshot of a file that has been signed by Web Cake:

Screenshot of the Web Cake 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 Web Cake 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, etc. You can also see the address for Web Cake, such as the street name, city and country.

VeriSign Class 3 Code Signing 2010 CA has issued the Web Cake certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screenshot above.

Web Cake Files

These are the Web Cake files I've gathered, thanks to the FreeFixer users.

Detection RatioFile Name
18/46WebCakeDesktop.exe
17/45WebCakeIEClient.dll
15/47WADesktop.Updater.exe
22/48WebCakeIEClient.dll
14/48Dora.dat
19/48WBDesktop.Updater.1.0.0.16.exe
23/46WebCakesetup[1].exe
24/48WebCakeDesktop.exe
10/46Phoenix.dat
19/48WebCakeIEClient.dll
10/46Maintain.dat
9/46WebCakeDesktop.exe

Scanner and Detection Names

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

ScannerDetection Names
AVGAdInject.WebCake
AgnitumAdware.Yontoo!AyyxvaLQBmg, Adware.Yontoo!wyndF87Yrz8
AntiVirAdware/WebCake.A
Antiy-AVLAdWare/Win32.WebCake, AdWare/Win32.Yontoo.gen
AvastWin32:Webcake-A [Adw]
BitDefenderAdware.WebCake.A, Adware.WebCake.C, Adware.WebCake.B
CAT-QuickHealAdware.WebCake.a, Adware.WebCake.a (Not a Virus)
ClamAVWin.Adware.Webcake-1
ComodoApplication.Win32.Yontoo.wm, ApplicUnwnt, UnclassifiedMalware, Application.Win32.AdWare.Webcake.~A
DrWebAdware.Plugin.11, Adware.WebCake.1, Adware.WebCake.2
ESET-NOD32MSIL/WebCake.B, probably a variant of Win32/Adware.Yontoo.A, MSIL/WebCake.A, a variant of MSIL/WebCake.A, Win32/WebCake.A
EmsisoftAdware.WebCake.A (B), Adware.WebCake.C (B), Adware.WebCake.B (B)
F-SecureAdware.WebCake.A, Adware.WebCake.C, Adware.WebCake.B
FortinetRiskware/Yontoo, Adware/Fam.NB, Adware/Yontoo.A, Adware/WebCake
GDataAdware.WebCake.A, Adware.WebCake.C, Application.Downloader.QR, Adware.WebCake.B
IkarusAdWare.WebCake, AdWare.Win32.WebCake, AdWare.Yontoo
K7AntiVirusRiskware
K7GWRiskware
Kasperskynot-a-virus:AdWare.Win32.WebCake.a
KingsoftWin32.Troj.Dsearch.h.(kcloud), Win32.Troj.Yontoo.A.(kcloud), Win32.Troj.Generic.a.(kcloud), Win32.Troj.WebCake.a.(kcloud)
MalwarebytesAdware.WebCake, PUP.Optional.WebCake.A, PUP.WebCake.A
McAfeeArtemis!719AD5D66260, Artemis!FE6B34DA2D16
McAfee-GW-EditionArtemis!719AD5D66260, Artemis!FE6B34DA2D16
MicroWorld-eScanAdware.WebCake.A, Adware.WebCake.C, Application.Downloader.QR, Adware.WebCake.B
MicrosoftAdware:Win32/WebCake
PCToolsSecurityRisk.Yontoo!rem, SecurityRisk.WebCake
PandaAdware/WebCake, Generic Malware
RisingTrojan.InstallRex!562A
SUPERAntiSpywareAdware.WebCake
SophosGeneric PUA GO
SymantecWebCake, Yontoo
TrendMicroADW_CAKEBEW
TrendMicro-HouseCallADW_CAKEBEW, TROJ_GEN.F47V0817, TROJ_GEN.F47V0812, TROJ_GEN.F47V0814, TROJ_GEN.F47V0815
VBA32AdWare.WebCake
VIPREYontoo (fs)
ViRobotAdware.WebCake.52504
nProtectAdware.WebCake.C

* How the Detection Percentage is Calculated

The detection percentage is based on the fact that I've collected 1032 scan results for the Web Cake files. 388 of these scan reports 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:

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