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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 18 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:
d7e04e415b18abb738fa3223630af9b4

SHA-1:
4b35af293b31c511a4d36ab1e245044f30a21d2b

SHA-256:
a845f984b1e1761e1aa273e79656f054edf6e2da11faef8a4662a40df15ed6c7

Scanner detections:
18 / 68

Status:
Adware

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

Analysis date:
4/26/2024 8:59:15 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Riskware.Adware
7.1.1

Avira AntiVirus
Adware/BHO.K.1
7.11.90.238

Baidu Antivirus
AdWare.Win32.Yontoo
4.0.3.1434

Bkav FE
W32.Clodbe8.Trojan
1.3.0.4959

Boost by Reason
Optional.BHO.Yontoo.O
188838

Comodo Security
Application.Win32.Yontoo.a
17640

Dr.Web
Adware.Siggen.24249
9.0.1.063

ESET NOD32
Win32/Adware.Yontoo (variant)
8.9310

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

K7 AntiVirus
Unwanted-Program
13.174.10644

Kaspersky
not-a-virus:AdWare.Win32.WebCake
14.0.0.4225

McAfee
Artemis!3EB0BC72D47F
5600.7045

NANO AntiVirus
Trojan.Win32.Siggen.cocwct
0.28.0.57029

Reason Heuristics
PUP.BHO.Yontoo.O
14.8.7.17

SUPERAntiSpyware
Adware.Yontoo
10749

Trend Micro House Call
ADW_YONTOO
7.2.63

Trend Micro
ADW_YONTOO
10.465.04

VIPRE Antivirus
Yontoo
25588

File size:
190.3 KB (194,848 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:
GoDaddy.com, Inc.

Valid from:
5/10/2011 3:10:37 AM

Valid to:
5/10/2012 3:10:37 AM

Subject:
CN=Yontoo LLC, O=Yontoo LLC, L=Carlsbad, S=CA, C=US

Issuer:
SERIALNUMBER=07969287, CN=Go Daddy Secure Certification Authority, OU=http://certificates.godaddy.com/repository, O="GoDaddy.com, Inc.", L=Scottsdale, S=Arizona, C=US

Serial number:
07E1F9EBCCC1AC

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:
12/22/2011 5:37:19 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
3072:r0Kgjk/O8i3I1isii1uwD1T+c23IjseBhyvGHnKU74FSQFfmuf1EG:r0KwPki0V+c24j1BkSnKvB

Entry address:
0x12587

Entry point:
8B, FF, 55, 8B, EC, 83, 7D, 0C, 01, 75, 05, E8, C5, 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...
 
[+]

Entropy:
6.3442

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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