YontooIEClient.dll

Yontoo Runtime

Yontoo LLC

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module YontooIEClient.dll by Yontoo has been detected as adware by 26 anti-malware scanners. It is installed within the context of Internet Explore as a BHO (Browser Helper Object) under the name ‘Yontoo Layers’. This file is typically installed with the program Yontoo 1.10.03 by Yontoo Technology, Inc. which is a potentially unwanted software program. By plugging into the web browser, this extension will inject advertisements both banner and context hyperlinks based on the web sites being visited. It can be installed from the program's website or it may be bundled by third-party software installation programs.
Publisher:
Yontoo LLC  (signed and verified)

Product:
Yontoo Runtime

Version:
1.10.01

MD5:
c747d87c488d577a38bf65d89d6268e2

SHA-1:
805526b82a46da3cf54625c24fc297394c0f648b

SHA-256:
7ef89a5f59f2c27ec83fb79e2b916baf4cd7c98cf5bcb5771230f2ade0a80572

Scanner detections:
26 / 68

Status:
Adware

Explanation:
Injects advertising in the web browser in various formats.

Analysis date:
12/23/2024 11:25:11 PM UTC  (a few moments ago)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Application.Generic.508331
911

Agnitum Outpost
Adware.WebCake
7.1.1

Baidu Antivirus
Adware.Win32.WebCake
4.0.3.131224

Bitdefender
Application.Generic.508331
1.0.20.1095

Bkav FE
W32.Clod973.Trojan
1.3.0.4613

Boost by Reason
Optional.BHO.Yontoo.O
188838

Clam AntiVirus
Win.Adware.Yontoo-4
0.98/18355

Comodo Security
Application.Win32.Yontoo.a
17389

Dr.Web
Adware.Plugin.11
9.0.1.0358

ESET NOD32
Win32/Adware.Yontoo (variant)
7.9135

Fortinet FortiGate
Adware/Yontoo
12/24/2013

F-Prot
W32/Adware.AKRZ
v6.4.7.1.166

G Data
Application.Generic.508331
14.8.24

IKARUS anti.virus
not-a-virus:AdWare.Win32.WebCake
t3scan.2.2.29

K7 AntiVirus
Adware
13.172.9512

Kaspersky
not-a-virus:AdWare.Win32.WebCake
14.0.0.4573

McAfee
Artemis!E17C7784609C
5600.7245

MicroWorld eScan
Application.Generic.508331
15.0.0.657

NANO AntiVirus
Trojan.Win32.Siggen.cocwct
0.28.0.56582

Reason Heuristics
PUP.BHO.Yontoo.O
14.8.7.17

Rising Antivirus
Trojan.Win32.Generic.137177DE
23.00.65.131222

SUPERAntiSpyware
Adware.Yontoo
10888

Trend Micro House Call
TROJ_GEN.R0CBH05LS13
7.2.20

Trend Micro
TROJ_GEN.R0CBC0OAK14
10.465.07

Vba32 AntiVirus
AdWare.WebCake
3.12.24.3

VIPRE Antivirus
Yontoo
24036

File size:
190.4 KB (194,928 bytes)

Product version:
1.10.01

Copyright:
Copyright (c) 2011 Yontoo LLC. All rights reserved.

Original file name:
YontooIEClient.dll

File type:
Dynamic link library (Win32 DLL)

Language:
English (United States)

Common path:
C:\Program Files\yontoo\yontooieclient.dll

Digital Signature
Signed by:

Authority:
VeriSign, Inc.

Valid from:
12/7/2011 12:00:00 AM

Valid to:
12/6/2012 11:59:59 PM

Subject:
CN=Yontoo LLC, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Yontoo LLC, L=Carlsbad, S=California, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
4F8617352536F013088C9B5533AA4440

Registration
CLSIDs:
{10DE7085-6A1E-4D41-A7BF-9AF93E351401}, {DF7770F7-832F-4BDF-B144-100EDDD0C3AE}, {FD72061E-9FDE-484D-A58A-0BAB4151CAD8}

ProgIDs:
YontooIEClient.Api.1, YontooIEClient.Layers.1

COM registered:
Yes

File PE Metadata
Compilation timestamp:
8/10/2012 11:54:26 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
3072:FvWMjk7cpgC5sMGweABHpBWeJn+oST8g34KU7wVsQFfmufJ3:FTS2/5r7BdJn+f34Kjh

Entry address:
0x12587

Entry point:
8B, FF, 55, 8B, EC, 83, 7D, 0C, 01, 75, 05, E8, B5, 65, 00, 00, FF, 75, 08, 8B, 4D, 10, 8B, 55, 0C, E8, EC, FE, FF, FF, 59, 5D, C2, 0C, 00, 8B, FF, 55, 8B, EC, 8B, 45, 08, A3, D0, 8D, 02, 10, 5D, C3, 8B, FF, 55, 8B, EC, FF, 35, D0, 8D, 02, 10, FF, 15, 58, 01, 02, 10, 85, C0, 74, 0F, FF, 75, 08, FF, D0, 59, 85, C0, 74, 05, 33, C0, 40, 5D, C3, 33, C0, 5D, C3, 6A, 00, 68, 00, 10, 00, 00, 6A, 00, FF, 15, 50, 01, 02, 10, 33, C9, 85, C0, 0F, 95, C1, A3, D8, 8D, 02, 10, 8B, C1, C3, FF, 35, D8, 8D, 02, 10, FF, 15...
 
[+]

Code size:
119.5 KB (122,368 bytes)

Internet Explorer BHO
Display name:
Yontoo Layers

CLSID:
{FD72061E-9FDE-484D-A58A-0BAB4151CAD8}

CLSID name:
Yontoo


The file YontooIEClient.dll has been discovered within the following program.

Yontoo 1.10.03  by Yontoo Technology, Inc.
Yontoo is a web browser toolbar and extension (BHO in Internet Explorer). It collects and stores information about your web browsing habits so they can suggest services or provide advertising.
www.yontoo.com
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