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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 40 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:
9a4e4b0cabf9ee31ad0654c9320b0e13

SHA-1:
affe6f15aee95862069d614ba8a70e69c877e09b

SHA-256:
5bd289235097a8d2d207df3996a897b997e1d4a08fb0c632f0a1a1a1bbdf08d4

Scanner detections:
40 / 68

Status:
Adware

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

Analysis date:
11/14/2024 9:06:36 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Application.Generic.508331
982

Agnitum Outpost
Adware.WebCake
7.1.1

Baidu Antivirus
Adware.Win32.Yontoo
4.0.3.14528

Bitdefender
Application.Generic.508331
1.0.20.740

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
16955

Dr.Web
Adware.Plugin.11
9.0.1.0148

ESET NOD32
Win32/Adware.Yontoo (variant)
8.8812

Fortinet FortiGate
Adware/Yontoo
5/28/2014

F-Prot
W32/Adware.AKRZ
v6.4.7.1.166

G Data
Application.Generic.508331
14.5.24

IKARUS anti.virus
not-a-virus:AdWare.Win32.WebCake
t3scan.2.0.127

K7 AntiVirus
Adware
13.176.11239

Kaspersky
not-a-virus:AdWare.Win32.WebCake
14.0.0.3797

McAfee
Artemis!9A4E4B0CABF9
5600.7116

MicroWorld eScan
Application.Generic.508331
15.0.0.444

NANO AntiVirus
Trojan.Win32.Siggen.cocwct
0.28.0.57630

Reason Heuristics
PUP.BHO.Yontoo.O
14.8.7.17

Rising Antivirus
Trojan.Win32.Generic.137177DE
23.00.65.14526

SUPERAntiSpyware
Adware.Yontoo
10578

Trend Micro House Call
TROJ_GEN.RC1H1DM
7.2.148

Trend Micro
TROJ_GEN.R0CBC0OAK14
10.465.28

Vba32 AntiVirus
AdWare.WebCake
3.12.24.3

VIPRE Antivirus
Yontoo
21566

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:
7/25/2012 1:22:45 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
3072:skvWMjk7cpgC5sMGweABHpBWeJn+oST8o3BKU7EV/QFfmufJd:LTS2/5r7BdJn+fvBKr2

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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