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clearthinkuninstall.exe

ClearThink

This is the installer/setup program for a Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application clearthinkuninstall.exe by ClearThink has been detected as adware by 4 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. This is the uninstaller utility registered in the Windows Control Panel for the program ClearThink by ClearThink. Additionally, the file is typically installed by a number of programs including ClearThink by Yontoo Technology, Inc. and Buzzdock by Alactro LLC, both potentially unwanted software. It will plug into the web browser and display context-based advertisements by overwriting existing ads or by inserting new ones on various web pages.
Publisher:
ClearThink  (signed and verified)

MD5:
c4e64f41feb23e5e32d7c354a5349486

SHA-1:
174616b5f147e7f499b0c67f9e12a173fda8bbc7

SHA-256:
c59e97cefde969be1c5075986a0e78ab626405d906e454986240c01c60573782

Scanner detections:
4 / 68

Status:
Adware

Explanation:
This is the installer/uninstaller for the Yontoo branded (clearthink) adware program. The main protgram is desigend to deliver advertisements to the user's web browser through injection.

Analysis date:
4/27/2024 4:15:31 AM UTC  (today)

Scan engine
Detection
Engine version

AVG
Generic
2015.0.3363

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.1492

ESET NOD32
Win32/BrowseFox.C potentially unwanted application
7.0.302.0

Reason Heuristics
Adware.Yontoo.ClearThink.T
14.9.2.16

File size:
253.5 KB (259,616 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\Program Files\clearthink\clearthinkuninstall.exe

Digital Signature
Signed by:
ClearThink

Authority:
VeriSign, Inc.

Valid from:
8/5/2014 10:00:00 AM

Valid to:
8/6/2015 9:59:59 AM

Subject:
CN=ClearThink, O=ClearThink, L=Santa Monica, S=California, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
1200063ED04B1DA36F7FE204B3DD8617

File PE Metadata
Compilation timestamp:
12/6/2009 9:52:01 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:cZ+11dJyZCrCy/1RWBT5ilBVJGtI6t8TcwZm/G/HcpR:Z0krCs1s15i7DGt3eTcp/G/8/

Entry address:
0x30CB

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 38, 6F, 44, 00, E8, F1, 2B, 00, 00, A3, 84, 6E, 44, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 30, 9C, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 80, 2E, 44, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, F0, 46, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.8650

Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

Program Uninstaller
Program name:
ClearThink

Display publisher:
ClearThink

Display version:
2014.09.02.155836

Uninstall string:
C:\Program Files (x86)\ClearThink\ClearThinkuninstall.exe


The file clearthinkuninstall.exe has been discovered within the following programs.

Buzzdock  by Alactro LLC
This is a web browser extension that injects advertising. From the EULA: "Buzzdock is free to download and use. Buzzdock is supported by advertising, and users will see additional ads on websites where Buzzdock features operate.
www.buzzdock.com/faq-support
79% remove it
ClearThink  by Yontoo Technology, Inc.
ClearThink is an advertising supported (adware) extension that runs in the context of the user's web browser as well as a process in the background.
useclearthink.com/support
83% remove it
 
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