Stepan Rybin - 42% Detection Rate *

Did you just find a download or a file on your computer that has been digitally signed by Stepan Rybin? Some of the security products refers to the detected files as PUA/MultiPlug.11245 and not-a-virus:AdWare.Win32.MultiPlug.oaul. The detection rate for the Stepan Rybin files collected here is 42%. Please read on for more details.

You will probably notice Stepan Rybin when clicking to run the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screengrab shows:

Screenshot where Stepan Rybin appears as the verified publisher in the UAC dialog

You can view the additional details from the Stepan Rybin digital signature with the following steps:

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

Here is a screenshot of a file signed by Stepan Rybin:

Screenshot of the Stepan Rybin 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 Stepan Rybin and that no one has tampered with the file.

If you click the View Certificate button shown in the screengrab 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 Stepan Rybin, such as the street name, city and country.

Certum Code Signing CA has issued the Stepan Rybin certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screenshot above.

Stepan Rybin Files

These are the Stepan Rybin files I've gathered, thanks to the FreeFixer users.

Detection RatioFile Name
34/576630.exe
35/5727CC.exe
22/57Re-Loader ByR@1n V12FinalRev1 svn19022015 1400.exe
25/57WhatsApp.exe
25/57KMSPIC~1.EXE
28/56__php the_title();__.exe
16/57Download ANTBOY DVD-RIP English AVI Format.avi Torrent - KickassTorrents.exe
15/578D38.exe

Scanner and Detection Names

Here's the detection names for the Stepan Rybin files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.

ScannerDetection Names
ALYacAdware.MultiPlug.HM, Adware.MPLug.HH, Gen:Variant.Adware.MPlug.31, Gen:Variant.Adware.Mikey.7658, Gen:Variant.Adware.Mikey.8516, Adware.Agent.PHV
AVGGeneric6.ABBK, Generic6.AAUS, Generic6.QEM, Generic6.OWI, Generic6.RQV, Generic6.PVG, Generic6.AADP
Ad-AwareAdware.MultiPlug.HM, Adware.MPLug.HH, Gen:Variant.Adware.MPlug.31, Gen:Variant.Adware.Mikey.7658, Gen:Variant.Adware.Mikey.8516, Adware.Agent.PHV
AgnitumPUA.MultiPlug!
AhnLab-V3PUP/Win32.MultiPlug, Adware/Win32.MultiPlug
Antiy-AVLGrayWare[AdWare:not-a-virus]/Win32.MultiPlug.nnnn, GrayWare[AdWare:not-a-virus]/Win32.MultiPlug.oaul
AvastWin32:Rootkit-gen [Rtk], Win32:PUP-gen [PUP], Win32:MultiPlug-TP [PUP], Win32:Adware-gen [Adw]
AviraPUA/MultiPlug.11245
BitDefenderAdware.MultiPlug.HM, Adware.MPLug.HH, Gen:Variant.Adware.MPlug.31, Gen:Variant.Adware.Mikey.7658, Gen:Variant.Adware.Mikey.8516, Adware.Agent.PHV
BkavW32.HfsAdware.7840, W32.HfsAdware.5BFA, W32.HfsAdware.C752, W32.HfsAdware.39FA, W32.HfsAdware.1C54
ComodoApplication.Win32.MultiPlug.YTRA, Application.Win32.AdWare.MultiPlug.VA
CyrenW32/S-ecd553d7!Eldorado, W32/S-c17f8344!Eldorado, W32/S-05e718fa!Eldorado, W32/MultiPlug.H.gen!Eldorado, W32/S-6a891bf2!Eldorado
DrWebTrojan.Crossrider1.22656, Trojan.Crossrider.36840
ESET-NOD32a variant of Win32/Adware.MultiPlug.GD, a variant of Win32/Adware.MultiPlug.EZ, a variant of Win32/Adware.MultiPlug.ES, a variant of Win32/Adware.MultiPlug.FC, a variant of Win32/Adware.MultiPlug.FV
EmsisoftAdware.MultiPlug.HM (B), Adware.MPLug.HH (B), Gen:Variant.Adware.MPlug.31 (B), Gen:Variant.Adware.Mikey.7658 (B), Gen:Variant.Adware.Mikey.8516 (B), Adware.Agent.PHV (B)
F-ProtW32/S-ecd553d7!Eldorado, W32/S-c17f8344!Eldorado, W32/S-05e718fa!Eldorado, W32/MultiPlug.H.gen!Eldorado, W32/S-6a891bf2!Eldorado
F-SecureAdware.MultiPlug.HM, Adware.MPLug.HH, Gen:Variant.Adware.MPlug.31, Gen:Variant.Adware.Mikey.7658, Gen:Variant.Adware.Mikey.8516, Adware.Agent.PHV
FortinetRiskware/MultiPlug
GDataAdware.MultiPlug.HM, Adware.MPLug.HH, Gen:Variant.Adware.MPlug.31, Gen:Variant.Adware.Mikey.7658, Gen:Variant.Adware.Mikey.8516, Adware.Agent.PHV
IkarusPUA.Multiplug
JiangminAdWare/MultiPlug.eubz, AdWare/MultiPlug.fdsp
K7AntiVirusTrojan ( 0040fa761 ), Unwanted-Program ( 0040fa1f1 ), Unwanted-Program ( 0040f9681 )
K7GWTrojan ( 0040fa761 ), Unwanted-Program ( 0040fa1f1 ), Unwanted-Program ( 0040f9681 )
Kasperskynot-a-virus:AdWare.Win32.MultiPlug.oaul
MalwarebytesPUP.Optional.MultiPlug, PUP.Optional.Uni, PUP.Optional.MultiPlug.A, PUP.Optional.Unizeto, PUP.Optional.Bundler
McAfeeMultiPlug-FXC, MultiPlug-FVZ, MultiPlug-FVQ, MultiPlug-FWG
McAfee-GW-EditionMultiPlug-FXC, MultiPlug-FVZ, MultiPlug-FVQ, MultiPlug-FWG
MicroWorld-eScanAdware.MultiPlug.HM, Adware.MPLug.HH, Gen:Variant.Adware.MPlug.31, Gen:Variant.Adware.Mikey.7658, Gen:Variant.Adware.Mikey.8516
NANO-AntivirusRiskware.Win32.MultiPlug.dpncdw, Riskware.Win32.MultiPlug.dplvvz, Riskware.Win32.MultiPlug.dnzymr, Riskware.Win32.MultiPlug.donbrt, Riskware.Win32.MultiPlug.doahgq, Riskware.Win32.MultiPlug.dqaekh
RisingPE:AdWare.Win32.MPLug.b!1075357039, PE:Malware.XPACK-HIE/Heur!1.9C48
SophosMultiPlug
TencentTrojan.Win32.Qudamah.Gen.2, Trojan.Win32.Qudamah.Gen.6
VBA32suspected of Heur.Malware-Cryptor.Multiplug, SScope.Adware.MultiPlug
ZillyaAdware.MultiPlug.Win32.241181
nProtectAdware.MultiPlug.HM, Adware.MPLug.HH, Adware.Agent.PHV

* How the Detection Percentage is Calculated

The detection percentage is based on that I've gathered 1351 scan reports for the Stepan Rybin files. 562 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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