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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 22 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. 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)

MD5:
bb1fc41eb0898d964f62d710edf5c8f1

SHA-1:
62c81a87b904920660dbe94cc01a93f2763e2e66

SHA-256:
dcd3f4e091ebeb5388a127f5b7435563cfd5b2001581841c056e4783a35f1536

Scanner detections:
22 / 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:
4/25/2024 3:51:24 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Dropped:Adware.SwiftBrowse.CN
583

AhnLab V3 Security
Win-PUP/BrowseFox.Gen
2015.03.01

Avira AntiVirus
ADWARE/BrowseFox.Gen4
7.11.212.246

avast!
NSIS:BrowseFox-D [PUP]
2014.9-150701

AVG
Generic
2016.0.3061

Baidu Antivirus
Adware.Win64.BrowseFox
4.0.3.1571

Bitdefender
Dropped:Adware.SwiftBrowse.CN
1.0.20.910

Dr.Web
Trojan.BPlug.181
9.0.1.0182

Emsisoft Anti-Malware
Dropped:Adware.SwiftBrowse.CN
8.15.07.01.10

ESET NOD32
Win64/BrowseFox.AD potentially unwanted (variant)
9.11248

F-Secure
Dropped:Adware.SwiftBrowse.CN
11.2015-01-07_4

G Data
Dropped:Adware.SwiftBrowse.CN
15.7.25

K7 AntiVirus
Unwanted-Program
13.1915118

Kaspersky
not-a-virus:AdWare.Win32.SwiftBrowse
14.0.0.1800

McAfee
Artemis!BB1FC41EB089
5600.6717

MicroWorld eScan
Dropped:Adware.SwiftBrowse.CN
16.0.0.546

NANO AntiVirus
Trojan.Nsis.BrowseFox.dnxihk
0.30.0.296

nProtect
Dropped:Adware.SwiftBrowse.CN
15.02.27.01

Panda Antivirus
Trj/CI.A
15.07.01.10

Reason Heuristics
Adware.Yontoo.ClearThink.Installer (M)
15.7.1.22

Sophos
Browse Fox
4.98

VIPRE Antivirus
Yontoo
38000

File size:
253.5 KB (259,584 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:
8/4/2014 5:00:00 PM

Valid to:
8/5/2015 4:59:59 PM

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:
12/5/2009 2:52:01 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:7Z+11djyNjy/1RWBT567AL9CRIoXwZm/G/Hcph:EWs1s15B+Icp/G/8z

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:
7.8653

Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

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

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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