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yontoo-c5.exe

Best Video Downloader

Alactro LLC

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application yontoo-c5.exe by Alactro has been detected as adware by 11 anti-malware scanners. This is a setup and installation application and has been known to bundle potentially unwanted software. It uses Web-Pick's InstalleRex download manager and installer to bundle potentially unwanted ad-supported software which includes toolbars and browser extensions through a pay-per-install monetization scheme. It is also typically executed from the user's temporary directory.
Publisher:
Alactro LLC  (signed and verified)

Product:
Best Video Downloader

Description:
Installer

Version:
2012.8.20.1128

MD5:
01871302a399ac0dd81a1ebf28f7079f

SHA-1:
beaec52c464962de5fe38b198bb363c63ac97b02

SHA-256:
e5b1df3ffec7b1a717b8f0e8398ef0359fd14d4449e7baa6f6a82ffd5d4e5165

Scanner detections:
11 / 68

Status:
Adware

Explanation:
Uses the InstalleRex from WebPick Internet Holdings to install bundled add-ons including toolbars and other web browser extensions.

Analysis date:
11/14/2024 9:17:28 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Adware.Generic
7.1.1

Avira AntiVirus
ADWARE/Yontoo.Gen2
7.11.125.138

AVG
MultiDropper_c
2015.0.3417

Baidu Antivirus
Adware.Win32.Yontoo
4.0.3.14711

Comodo Security
UnclassifiedMalware
17625

Dr.Web
Adware.Plugin.8
9.0.1.0192

ESET NOD32
Win32/Adware.Yontoo (variant)
8.9301

G Data
Win32.Application.InstalleRex
14.7.24

Reason Heuristics
PUP.Installer.Alactro.J
14.8.8.0

Sophos
Generic PUA LO
4.96

VIPRE Antivirus
Yontoo
25498

File size:
1.1 MB (1,203,520 bytes)

Product version:
1.11.00

Copyright:
Copyright (c) 2012 Alactro LLC. All rights reserved.

File type:
Executable application (Win32 EXE)

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\temp\yontoo-c5.exe

Digital Signature
Signed by:
Alactro LLC

Authority:
GoDaddy.com, Inc.

Valid from:
5/15/2012 10:01:43 AM

Valid to:
5/26/2013 11:13:23 AM

Subject:
CN=Alactro LLC, O=Alactro 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:
046CAA7E02C7FB

File PE Metadata
Compilation timestamp:
3/10/2011 4:55:28 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
24576:tXELkiA/LIkAhI3TWGUGjPbu/YGYA4bA6YwSJgh:VCkiA/tD5/OcbA4

Entry address:
0x15B4

Entry point:
55, 8B, EC, 81, EC, CC, 05, 00, 00, 53, 56, 33, DB, 57, C6, 85, 34, FA, FF, FF, 00, 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, 3C, FE, FF, FF, 50, C7, 85, 3C, FE, FF, FF, 94, 00, 00, 00, FF, 15, 6C, 30, 40, 00, 85, C0, 75, 21, FF, 15, 14, 30, 40, 00, 50, 68, A8, 32, 40, 00, E8, 36, FA, FF, FF, 59, C7, 05, 04, 40, 40, 00, FF, 00, 00, 00, E9, 20, 02, 00, 00, 8B, 35, 68, 30, 40, 00, 68, 94, 32, 40, 00, 68, 84, 32, 40, 00, FF, D6, 50, FF, 15, 64, 30, 40...
 
[+]

Entropy:
7.9970

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

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