» yontooieclientsetup.exe
Overview
Analysis
File Details
Network (3)

yontooieclientsetup.exe

Yontoo Layers Client for Internet Explorer

Yontoo Technology, Inc.

This is the installer/setup program for a Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application yontooieclientsetup.exe by Yontoo Technology has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. This is a self-extracting archive and installer and has been known to bundle potentially unwanted software. While running, it connects to the Internet address api.yontoo.com on port 80 using the HTTP protocol.

File name:

Publisher:

Yontoo Technology, Inc. (signed and verified)

Product:

Yontoo Layers Client for Internet Explorer

Description:

Installer

Version:

2008.10.1.42

MD5:

f8144a2863a382f604733e6e1a9dd4ae

SHA-1:

f76b1f7999cc3d4f09ad4dce45079fc023b2ad1e

SHA-256:

e0ab66b1f6ba3be0b9510b71614b3d054072e71dadbc27d1afdc636e8a9f36c3

Scanner detections:

1 / 68

Status:

Adware

Explanation:

Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:

1/13/2025 7:21:59 AM UTC (today)

Scan engine

Detection

Engine version

Reason Heuristics

PUP.Yontoo (M)

16.12.3.13

File size:

221.8 KB (227,120 bytes)

Product version:

1.02.28

File type:

Executable application (Win32 EXE)

Language:

Language Neutral

Common path:

C:\users\{user}\downloads\yontooieclientsetup.exe

Digital Signature

Signed by:

Yontoo Technology, Inc.

Authority:

The USERTRUST Network

Valid from:

5/24/2008 5:00:00 PM

Valid to:

5/25/2009 4:59:59 PM

Subject:

CN="Yontoo Technology, Inc.", O="Yontoo Technology, Inc.", STREET=3440 Gird Rd, L=Fallbrook, S=CA, PostalCode=92028, C=US

Issuer:

CN=UTN-USERFirst-Object, OU=http://www.usertrust.com, O=The USERTRUST Network, L=Salt Lake City, S=UT, C=US

Serial number:

1C5F074DD8ACC358544B855BAD410BF5

File PE Metadata

Compilation timestamp:

7/22/2008 12:54:12 AM

OS version:

4.0

OS bitness:

Win32

Subsystem:

Windows GUI

Linker version:

8.0

CTPH (ssdeep):

3072:IHhJUqUJzc8BR/HLsucecn+KZ9i9xccIM+c4/04Ba7GWwGTXPKB9yFc7R1hDPPF6:IYRw+rsuSJ9Cq9N/PT3GLeR1FzRyF

Entry address:

0x15D0

Entry point:

55, 8B, EC, 81, EC, C8, 03, 00, 00, 53, 56, 57, FF, 15, 78, 30, 40, 00, 89, 45, FC, C6, 85, CC, FC, FF, FF, 00, FF, 15, 74, 30, 40, 00, A3, 00, 40, 40, 00, 8D, 85, 38, FC, FF, FF, 50, C7, 85, 38, FC, FF, FF, 94, 00, 00, 00, FF, 15, 70, 30, 40, 00, 85, C0, 75, 21, FF, 15, 3C, 30, 40, 00, 50, 68, 6C, 32, 40, 00, E8, 1F, FA, FF, FF, 59, C7, 05, 04, 40, 40, 00, FF, 00, 00, 00, E9, 0E, 02, 00, 00, 8B, 35, 6C, 30, 40, 00, 68, 58, 32, 40, 00, 68, 48, 32, 40, 00, FF, D6, 50, FF, 15, 68, 30, 40, 00, 85, C0, 74, 08... 
[+]

Entropy:

7.9472

Developed / compiled with:

Microsoft Visual C++

Code size:

7.5 KB (7,680 bytes)

The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):

Connects to wac.edgecastcdn.net (72.21.81.13:80)

TCP (HTTP):

Connects to service.yontoo.com (8.25.35.148:80)

TCP (HTTP):

Connects to api.yontoo.com (8.25.35.15:80)

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