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 15 anti-malware scanners. This is a self-extracting archive and installer 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:
2011.11.23.1230

MD5:
d853c5d25c93b0de9f975734f8a9ca4e

SHA-1:
54ab102473fbc933356d17793d64ae46b60aabce

SHA-256:
2cc193ca447d4c5fc401fdd6c04bf71caea07f8088496a16e2d627b8d3b83b50

Scanner detections:
15 / 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:
4/26/2024 9:02:38 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Adware.Yontoo
7.1.1

Avira AntiVirus
ADWARE/Yontoo.Gen
7.11.103.176

Baidu Antivirus
Trojan.Adware.Win32.Yontoo
4.0.3.15730

Comodo Security
ApplicUnwnt.Win32.AdWare.Yontoo.~
16986

Dr.Web
Adware.Plugin.11
9.0.1.0211

ESET NOD32
Win32/Adware.Yontoo (variant)
9.8832

F-Prot
W32/AdwareX.JUQ
v6.4.7.1.166

IKARUS anti.virus
AdWare.Yontoo
t3scan.2.0.127

K7 AntiVirus
Adware
13.172.9705

NANO AntiVirus
Trojan.Win32.Yontoo.zkelo
0.28.0.57029

Reason Heuristics
PUP.Yontoo.Installer (M)
15.7.30.21

Rising Antivirus
Trojan.InstallRex!562A
23.00.65.15728

Trend Micro House Call
TROJ_GEN.R3OH1DR
7.2.211

Trend Micro
ADW_YONTOO
10.465.30

VIPRE Antivirus
Yontoo
11227

File size:
780.7 KB (799,464 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:

Authority:
GoDaddy.com, Inc.

Valid from:
5/9/2011 9:10:37 PM

Valid to:
5/9/2012 9:10:37 PM

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 4:55:32 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
24576:NbfU+JPtOKvi1Ejr7/Szn4JaBe9gP5TARYbD1e:yYFOUvL/Sb4EAghTARYbDE

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:
7.9927

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

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