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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’. 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:
d1f09d40e5d1f24e4ccc54c9a606c2dc

SHA-1:
09ec9c4ae6d73266e17461cf99c0c97c42f96274

SHA-256:
9496c3d791dbb1de5d31745f70b4424251e520a10a855ed14689bed7f783bdf1

Scanner detections:
26 / 68

Status:
Adware

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

Analysis date:
4/23/2024 2:17:11 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Application.Generic.508331
911

Agnitum Outpost
Adware.WebCake
7.1.1

Baidu Antivirus
Adware.Win32.WebCake
4.0.3.14126

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
9.0.1.026

ESET NOD32
Win32/Adware.Yontoo (variant)
8.9135

Fortinet FortiGate
Adware/Yontoo
1/26/2014

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
14.0.0.4407

McAfee
Artemis!E17C7784609C
5600.7238

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
23.00.65.14124

SUPERAntiSpyware
Adware.Yontoo
10822

Trend Micro House Call
TROJ_GEN.R0CBH05LS13
7.2.26

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:
Yontoo LLC

Authority:
VeriSign, Inc.

Valid from:
12/7/2011 1:00:00 AM

Valid to:
12/7/2012 12:59:59 AM

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

File PE Metadata
Compilation timestamp:
5/11/2012 11:59:39 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
3072:qvWMjk7cpgC5sMGweABHpBWeJn+oST8w3JKU7qVcQFfmufJ1:qTS2/5r7BdJn+fjJKln

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


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