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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 33 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:
5744a469ceade9d1d2394415af7725f5

SHA-1:
2fc7f8b92e045d04b29eae10d83d0eafaf21883e

SHA-256:
db4844841c9aa18d432e7194bfe953e1c2aa27a59041e6926c2e94a41e5d28c5

Scanner detections:
33 / 68

Status:
Adware

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

Analysis date:
1/9/2025 6:12:35 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.CS
641

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
Win-PUP/BrowseFox.Gen
2015.04.11

avast!
Win32:PUP-gen [PUP]
2014.9-150504

AVG
BrowseFox.F
2016.0.3119

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.1554

Bitdefender
Adware.SwiftBrowse.CS
1.0.20.620

Bkav FE
W32.HfsAdware
1.3.0.6379

Comodo Security
Application.Win32.BrowseFox.JM
21719

Dr.Web
Trojan.Yontoo.1734
9.0.1.0124

Emsisoft Anti-Malware
Adware.SwiftBrowse.CS
8.15.05.04.03

ESET NOD32
Win32/BrowseFox.O potentially unwanted (variant)
9.11456

Fortinet FortiGate
Riskware/BrowseFox
5/4/2015

F-Prot
W32/S-5aefa7b7
v6.4.7.1.166

F-Secure
Adware.SwiftBrowse.CS
11.2015-04-05_2

G Data
Adware.SwiftBrowse.CS
15.5.25

herdProtect (fuzzy)
variant of browsestudiobho.dll (Adware)
2015.8.2.18

K7 AntiVirus
Trojan
13.202.15557

Malwarebytes
PUP.Optional.BrowseStudio.A
v2015.05.04.03

McAfee
BrowseFox-FRR
5600.6775

MicroWorld eScan
Adware.SwiftBrowse.CS
16.0.0.372

NANO AntiVirus
Trojan.Win32.BPlug.dfohwl
0.30.10.952

nProtect
Adware.SwiftBrowse.CS
15.04.10.01

Panda Antivirus
Trj/CI.A
15.05.04.03

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

Quick Heal
Adware.BrowseFox.A5
5.15.14.00

Reason Heuristics
Threat.Yontoo.BrowseStudio
15.5.4.11

Sophos
Generic PUA CP
4.98

Trend Micro House Call
TROJ_GEN.F0C2C00LB14
7.2.124

Trend Micro
TROJ_GEN.F0C2C00LB14
10.465.04

Vba32 AntiVirus
AdWare.Kranet
3.12.26.3

VIPRE Antivirus
Adware.BrowseFox
39228

Zillya! Antivirus
Backdoor.PePatch.Win32.53723
2.0.0.2134

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\0hxdbo2w\browsestudio.dll

Digital Signature
Signed by:
BrowseStudio

Authority:
VeriSign, Inc.

Valid from:
9/1/2014 5:00:00 PM

Valid to:
9/2/2015 4:59:59 PM

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:
11/21/2014 6:51:10 PM

OS version:
6.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
3072:Mn6oqa7ZcJ83Z2qJC0SzN+3aR4id15+s+xIaIrYvwwLAa:MOa7Zce3BCR/wxIcIwL7

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...
 
[+]

Entropy:
6.3528

Developed / compiled with:
Microsoft Visual C++

Code size:
159 KB (162,816 bytes)

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

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

Remove browsestudio.dll - Powered by Reason Core Security
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