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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:
2012.3.12.1251

MD5:
6e864757e2b45d0401156d6ca048ad84

SHA-1:
b9adbb0dec7a9bf1726dc9699800b437fbdfa5f1

SHA-256:
db18fb8d5320734a066b21d724249fe39a5b407f51fcdcef60fe09b971c94669

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:
12/23/2024 5:17:24 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Adware.Yontoo
7.1.1

Avira AntiVirus
ADWARE/Yontoo.Gen
7.11.129.154

Baidu Antivirus
Adware.Win32.Yontoo
4.0.3.151126

Comodo Security
UnclassifiedMalware
17738

Dr.Web
Adware.Plugin.8
9.0.1.0330

Emsisoft Anti-Malware
Dropped:Adware.DomaIQ.Z
8.15.11.26.03

ESET NOD32
Win32/Adware.Yontoo (variant)
9.9387

F-Prot
W32/AdwareX.JUQ
v6.4.7.1.166

IKARUS anti.virus
AdWare.Yontoo
t3scan.2.2.29

K7 AntiVirus
Adware
13.172.9705

NANO AntiVirus
Trojan.Win32.Yontoo.zkelo
0.28.0.57029

Reason Heuristics
PUP.Yontoo.Installer (M)
15.11.26.3

Rising Antivirus
Trojan.InstallRex!562A
23.00.65.151124

Trend Micro House Call
TROJ_GEN.R3OH1DR
7.2.330

Trend Micro
ADW_YONTOO
10.465.26

VIPRE Antivirus
Yontoo
26188

File size:
1.1 MB (1,194,088 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:
5/9/2011 12:10:37 PM

Valid to:
5/9/2012 12:10:37 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:
8/8/2011 3:55:34 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
24576:vYU0c6B2lrRjlN/xXvcrUqRRPkX3oxi2s739q824n6:AZURjTp/crfRRPkX3mwQ4n6

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:
7.9962

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

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