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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 16 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:
2011.11.8.1750

MD5:
933472e11ff53823c9d09767d139aefa

SHA-1:
3e6585edc2748449fc1db411a23693d084a3f286

SHA-256:
479da29de26205b58e72869f9d6e601c300d03e08832c27c7fdee401447d74d2

Scanner detections:
16 / 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:
11/23/2024 3:06:19 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
Adware.Win32.Yontoo
4.0.3.151224

Comodo Security
UnclassifiedMalware
17738

Dr.Web
Adware.Plugin.11
9.0.1.0358

Emsisoft Anti-Malware
Dropped:Adware.DomaIQ.Z
8.15.12.24.12

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)
15.12.24.12

Rising Antivirus
Trojan.InstallRex!562A
23.00.65.151222

Trend Micro House Call
TROJ_GEN.R3OH1DR
7.2.358

Trend Micro
ADW_YONTOO
10.465.24

VIPRE Antivirus
Yontoo
21742

File size:
732.8 KB (750,336 bytes)

Product version:
1.10.01

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:
5/9/2011 3:10:37 PM

Valid to:
5/9/2012 3:10:37 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:
3/10/2011 9:55:32 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
12288:cAKbfULioXXkF7y2uWlKq+4gTtM43gKfFVwhH7r5Gq7jNGaDysMMo4:ubfU++kYOPxG4KdVwhbkeRlDysm4

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:
7.9916

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

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