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updateclearthink.exe

ClearThink

Part of the Yontoo web browser plugin (delivers advertisements to the web browser in the form of injected banners, text-links, popups, etc.) the updater mechanism for ClearThink will automatically keep the extension patched by downloaded new functionality which is auto-enabled by default. The application updateclearthink.exe by ClearThink has been detected as adware by 7 anti-malware scanners. It runs as a separate (within the context of its own process) windows Service named “Update ClearThink”. This file is typically installed with the program ClearThink by Yontoo Technology, Inc. which is a potentially unwanted software program. 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)

Version:
1.0.5357.22102

MD5:
1a54a9f3a9bb6a977a892b962d5b3bdc

SHA-1:
c5f3d1d5c5c21126858f48d7276580dbaa98c299

SHA-256:
350590c4279cff99bdc2bd0b86c8a378d0e8d6c12d94d4fed25b4c441c4ab596

Scanner detections:
7 / 68

Status:
Adware

Explanation:
Part of the Yontoo adware web browser extension update process.

Analysis date:
4/19/2024 9:44:17 PM UTC  (today)

Scan engine
Detection
Engine version

Avira AntiVirus
APPL/BrowseFox.Gen
7.11.170.100

AVG
Generic
2015.0.3364

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.1491

ESET NOD32
Win32/BrowseFox (variant)
8.10350

Kaspersky
not-a-virus:HEUR:AdWare.MSIL.Kranet
14.0.0.3315

Malwarebytes
PUP.Optional.ClearThink.A
v2014.09.01.09

Reason Heuristics
Adware.Yontoo.ClearThink.Q
14.9.1.21

File size:
315.7 KB (323,312 bytes)

Product version:
1.0.5357.22102

Original file name:
ClearThink.exe

File type:
Executable application (Win32 EXE)

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

Digital Signature
Signed by:
ClearThink

Authority:
VeriSign, Inc.

Valid from:
8/5/2014 2:00:00 AM

Valid to:
8/6/2015 1:59:59 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:
9/1/2014 3:16:59 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
8.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
6144:2P6fAzeKxiaYpzUl1/27a2nd7fEXwp3gLWzf92WosPhnJM7ZnwupXby/:2P6fzyMYLNwqe/

Entry address:
0x4EBC6

Entry point:
FF, 25, 00, 20, 40, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 02, 00, 10, 00, 00, 00, 20, 00, 00, 80, 18, 00, 00, 00, E0, 02, 00, 80, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 01, 00, 01, 00, 00, 00, 38, 00, 00, 80, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00...
 
[+]

Developed / compiled with:
Microsoft Visual C# / Basic .NET

Code size:
307 KB (314,368 bytes)

Service
Display name:
Update ClearThink

Type:
Win32OwnProcess


The file updateclearthink.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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The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to a23-55-155-27.deploy.static.akamaitechnologies.com  (23.55.155.27:80)

TCP (HTTP):
Connects to a23-13-171-27.deploy.static.akamaitechnologies.com  (23.13.171.27:80)

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