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yontoo-c2.exe

FreeTwitTube

Buzzdock LLC

The application yontoo-c2.exe by Buzzdock has been detected as adware by 9 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. The file has been seen being downloaded from media.vitavita.com.es and multiple other hosts.
Publisher:
Buzzdock LLC  (signed and verified)

Product:
FreeTwitTube

Description:
Installer

Version:
2012.12.12.1306

MD5:
af4e5038c0dadee5e1b5bd064344f6b0

SHA-1:
aa00a992dac13f0b5a43134e8ac87e663bd35b6c

SHA-256:
44bc8536f6ef8526a4818a0041043e00bde14d30e55179c3d772992096cb2e14

Scanner detections:
9 / 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:
4/16/2024 5:46:43 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Adware.Generic
7.1.1

Bkav FE
W32.Clod4dd.Trojan
1.3.0.4613

Comodo Security
UnclassifiedMalware
17485

Dr.Web
Adware.Plugin.8
9.0.1.0357

ESET NOD32
Win32/Adware.Yontoo (variant)
7.9190

G Data
Win32.Application.InstalleRex
13.12.22

Reason Heuristics
PUP.Installer.Buzzdock.J
14.3.3.12

Rising Antivirus
PE:Trojan.Win32.Generic.13F329F3!334703091
23.00.65.131221

VIPRE Antivirus
Yontoo
24656

File size:
1.3 MB (1,384,464 bytes)

Product version:
1.11.00

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

File type:
Executable application (Win32 EXE)

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\temp\yontoo-c2.exe

Digital Signature
Signed by:
Buzzdock LLC

Authority:
GoDaddy.com, Inc.

Valid from:
5/15/2012 9:00:36 PM

Valid to:
5/15/2013 5:45:46 PM

Subject:
CN=Buzzdock LLC, O=Buzzdock 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:
2B8C7BB69DADF3

File PE Metadata
Compilation timestamp:
3/11/2011 3:55:28 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
24576:1bfU+myCzzxS+jth6sv0xgdcXdd33EM/MbqfEkl/FchAw9WYRz7dfZz:a5NzNv9v1dcXL3p/MJmj2NRlZz

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...
 
[+]

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

The file yontoo-c2.exe has been seen being distributed by the following 2 URLs.

http://media.vitavita.com.es/xmlstatic/installers/software/sterkly/.../Yontoo-C2.exe

http://d2ugaifelwk06r.cloudfront.net/Yontoo-C2.exe

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