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browsestudiobho.dll

BrowseStudio

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module browsestudiobho.dll by BrowseStudio has been detected as adware by 19 anti-malware scanners. It is installed within the context of Internet Explore as a BHO (Browser Helper Object) under the name ‘BrowseStudio’. 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:
feb7cb0629427801068920213e338766

SHA-1:
396d41dbbda3a4d569cf30bb8f25a67bf6609e76

SHA-256:
446dffb53540d7c85c9c4651245fd7c09768942bbab4f590a287a44b3572a069

Scanner detections:
19 / 68

Status:
Adware

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

Analysis date:
11/5/2024 11:18:40 PM UTC  (a few moments ago)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.CS
804

Avira AntiVirus
Adware/BrowseFox.aol
7.11.188.80

AVG
BrowseFox.F
2015.0.3282

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.141123

Bitdefender
Adware.SwiftBrowse.CS
1.0.20.1635

Comodo Security
Application.Win32.BrowseFox.JM
20172

Dr.Web
Trojan.BPlug.167
9.0.1.0327

Emsisoft Anti-Malware
Adware.SwiftBrowse.CS
8.14.11.23.09

ESET NOD32
Win32/BrowseFox (variant)
8.10768

F-Secure
Adware.SwiftBrowse.CS
11.2014-23-11_1

G Data
Adware.SwiftBrowse.CS
14.11.24

K7 AntiVirus
Trojan
13.185.14098

Malwarebytes
PUP.Optional.BrowseStudio.A
v2014.11.23.09

McAfee
BrowseFox-FRR
5600.6938

MicroWorld eScan
Adware.SwiftBrowse.CS
15.0.0.981

NANO AntiVirus
Trojan.Win32.BPlug.dfohwl
0.28.6.63474

Panda Antivirus
Trj/CI.A
14.11.23.09

Qihoo 360 Security
Win32/Virus.Adware.240
1.0.0.1015

Reason Heuristics
PUP.BHO.BrowseStudio.P
14.11.23.9

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)

Common path:
C:\Program Files\browsestudio\browsestudiobho.dll

Digital Signature
Signed by:
BrowseStudio

Authority:
VeriSign, Inc.

Valid from:
9/2/2014 3:00:00 AM

Valid to:
9/3/2015 2:59:59 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:
11/22/2014 6:23:32 PM

OS version:
6.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
3072:6n6oqa7ZcJ83Z2qJC0SzN+3aR4id15+s+xIaIkYvwLLe:6Oa7Zce3BCR/wxI3ILLe

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)

Internet Explorer BHO
Display name:
BrowseStudio

CLSID:
{1e9e0e98-4ab7-40b0-a0ce-69105c1b7c92}


The file browsestudiobho.dll has been seen being distributed by the following URL.

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

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