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 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:
2011.11.17.1711

MD5:
2ed047ddb898ac3113f5c9d825a1de5c

SHA-1:
819f0acd1e17e07ee5935401899bffbbb5457152

SHA-256:
2147241c066c9e9192a98ea2b83646429fe75882a1067b60e5c35beba1a1087d

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:
11/23/2024 3:08:58 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
4.0.3.14828

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

Dr.Web
Adware.Plugin.11
9.0.1.0240

ESET NOD32
Win32/Adware.Yontoo (variant)
8.8832

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.Installer.Yontoo.S
14.8.28.15

Rising Antivirus
Trojan.InstallRex!562A
23.00.65.14826

Trend Micro House Call
TROJ_GEN.RC1H1BQ
7.2.240

Trend Micro
ADW_YONTOO
10.465.28

VIPRE Antivirus
Yontoo
21742

File size:
762.1 KB (780,344 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 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:wA9bfULioXAjhw3E3TZhewCYvoOobIWKtAsmQDE6qskylq7VR45rAEWwh:9bfU+tjPewlgOmBKtADQDEbskyIRhe

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:
7.9923

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

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