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yontoosetup-silent.exe

Yontoo

Yontoo LLC

This is the installer/setup program for a Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application yontoosetup-silent.exe by Yontoo has been detected as adware by 10 anti-malware scanners. This is a setup and installation application and has been known to bundle potentially unwanted software. It is also typically executed from the user's temporary directory.
Publisher:
Yontoo LLC  (signed and verified)

Product:
Yontoo

Description:
Installer

Version:
2011.12.21.1337

MD5:
f478d6ce6bfe173158217a59a5588f79

SHA-1:
50b62f73c68b6607bfd4b970bf4255e3835ee7ca

SHA-256:
09fe6224648d91660cde9342ec1cf625454ecb30a6e4f25af5147cb425d46809

Scanner detections:
10 / 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:
4/24/2024 11:40:07 PM UTC  (a few moments ago)

Scan engine
Detection
Engine version

Agnitum Outpost
Adware.Yontoo
7.1.1

Avira AntiVirus
ADWARE/Yontoo.Gen
7.11.128.104

Baidu Antivirus
AdWare.Win32.Yontoo
4.0.3.1434

Boost by Reason
Optional.Yontoo.S
188838

Comodo Security
Application.Win32.Yontoo.a
17711

Dr.Web
Adware.Plugin.11
9.0.1.063

ESET NOD32
Win32/Adware.Yontoo
8.9367

IKARUS anti.virus
AdWare.Yontoo
t3scan.2.2.29

Reason Heuristics
PUP.Installer.Yontoo.S
14.8.7.17

VIPRE Antivirus
Yontoo
26030

File size:
795.1 KB (814,224 bytes)

Product version:
1.10.02

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

File type:
Executable application (Win32 EXE)

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\temp\yontoosetup-silent.exe

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

File PE Metadata
Compilation timestamp:
3/11/2011 10:55:32 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
12288:1ABbfULioXWNiAyRdr/LcZDnRW2yhFvcYDSOpzGwW0abx+3W1E+i:mbfU+3Nl0drj0rk2y4Y22al+3/J

Entry address:
0x1627

Entry point:
55, 8B, EC, 81, EC, 58, 0B, 00, 00, 53, 56, 33, DB, 57, 66, 89, 9D, A8, F4, FF, FF, 89, 5D, FC, FF, 15, 74, 30, 40, 00, A3, 00, 40, 40, 00, FF, 15, 70, 30, 40, 00, 89, 45, F8, 8D, 85, B8, FC, FF, FF, 50, C7, 85, B8, FC, FF, FF, 14, 01, 00, 00, FF, 15, 6C, 30, 40, 00, 85, C0, 75, 21, FF, 15, 14, 30, 40, 00, 50, 68, 30, 34, 40, 00, E8, 40, FA, FF, FF, 59, C7, 05, 04, 40, 40, 00, FF, 00, 00, 00, E9, C5, 01, 00, 00, 68, 1C, 34, 40, 00, 68, 0C, 34, 40, 00, FF, 15, 68, 30, 40, 00, 50, FF, 15, 64, 30, 40, 00, 3B...
 
[+]

Entropy:
7.9928

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

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