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browsestudio.dll

BrowseStudio

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module browsestudio.dll by BrowseStudio has been detected as adware by 22 anti-malware scanners. This file is typically installed with the program BrowseStudio 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. The file has been seen being downloaded from install-cdn.browsestudio.com.
Publisher:
BrowseStudio  (signed and verified)

Product:
BrowseStudio

Version:
1.0.0.3

MD5:
3379190555f56b594461819dcfc7cc5d

SHA-1:
80acb8cd41e93d4e3d3f73fcc27db284a7502bae

SHA-256:
49cdf4218993143733d5e8be49e7a3b1548c7123cb27438865268c9db7231da5

Scanner detections:
22 / 68

Status:
Adware

Explanation:
Injects advertising in the web browser in various formats.

Analysis date:
4/23/2024 9:28:10 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.CS
801

Avira AntiVirus
Adware/BrowseFox.aol
7.11.188.220

AVG
BrowseFox.F
2015.0.3279

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.141126

Bitdefender
Adware.SwiftBrowse.CS
1.0.20.1650

Comodo Security
Application.Win32.BrowseFox.JM
20197

Dr.Web
Trojan.BPlug.167
9.0.1.0330

Emsisoft Anti-Malware
Adware.SwiftBrowse.CS
8.14.11.26.10

ESET NOD32
Win32/BrowseFox (variant)
8.10781

Fortinet FortiGate
Riskware/BrowseFox
11/26/2014

F-Secure
Adware.SwiftBrowse.CS
11.2014-26-11_4

G Data
Adware.SwiftBrowse.CS
14.11.24

K7 AntiVirus
Trojan
13.185.14134

Malwarebytes
PUP.Optional.BrowseStudio.A
v2014.11.26.10

McAfee
BrowseFox-FRR
5600.6935

MicroWorld eScan
Adware.SwiftBrowse.CS
15.0.0.990

NANO AntiVirus
Trojan.Win32.BPlug.dfohwl
0.28.6.63726

nProtect
Adware.SwiftBrowse.CS
14.11.25.01

Panda Antivirus
Trj/CI.A
14.11.26.10

Qihoo 360 Security
HEUR/QVM30.1.Malware.Gen
1.0.0.1015

Reason Heuristics
PUP.BrowseStudio.M
14.11.26.9

Vba32 AntiVirus
AdWare.SwiftBrowse
3.12.26.3

File size:
244.7 KB (250,608 bytes)

Product version:
1.0.0.3

Copyright:
(c) BrowseStudio. All rights reserved.

File type:
Dynamic link library (Win32 DLL)

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\inetcache\content.ie5\qh1wmu1d\browsestudio.dll

Digital Signature
Signed by:
BrowseStudio

Authority:
VeriSign, Inc.

Valid from:
9/2/2014 2:00:00 AM

Valid to:
9/3/2015 1:59:59 AM

Subject:
CN=BrowseStudio, O=BrowseStudio, L=San Diego, 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:
11AE532A33120159E1078A0D3EDE88C9

File PE Metadata
Compilation timestamp:
11/25/2014 9:27:39 AM

OS version:
6.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
3072:Nn6oqa7ZcJ83Z2qJC0SzN+3aR4id15+s+xIaIuYvwLL2u:NOa7Zce3BCR/wxIZILLL

Entry address:
0x12854

Entry point:
55, 8B, EC, 83, 7D, 0C, 01, 75, 05, E8, 41, 8D, 00, 00, FF, 75, 10, FF, 75, 0C, FF, 75, 08, E8, 07, 00, 00, 00, 83, C4, 0C, 5D, C2, 0C, 00, 6A, 0C, 68, 90, 30, 03, 10, E8, BD, 01, 00, 00, 33, C0, 40, 8B, 75, 0C, 85, F6, 75, 0C, 39, 35, 44, 78, 03, 10, 0F, 84, E4, 00, 00, 00, 83, 65, FC, 00, 83, FE, 01, 74, 05, 83, FE, 02, 75, 35, 8B, 0D, 1C, A5, 02, 10, 85, C9, 74, 0C, FF, 75, 10, 56, FF, 75, 08, FF, D1, 89, 45, E4, 85, C0, 0F, 84, B1, 00, 00, 00, FF, 75, 10, 56, FF, 75, 08, E8, 11, FE, FF, FF, 89, 45, E4...
 
[+]

Developed / compiled with:
Microsoft Visual C++

Code size:
159 KB (162,816 bytes)

The file browsestudio.dll has been discovered within the following programs.

BrowseStudio  by Yontoo Technology, Inc.
BrowseStudio is an adware program (supported by various types of advertising) that is usually bundled by third party installers and download managers.
browsestudio.com/support
81% remove it
 
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The file browsestudio.dll has been seen being distributed by the following URL.

http://install-cdn.browsestudio.com/bed?bet=3

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