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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 12 anti-malware scanners. 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:
BrowseStudio  (signed and verified)

Product:
BrowseStudio

Version:
1.0.0.3

MD5:
69a793ab4c693173fb06bc8d5024bb92

SHA-1:
13e9b931d537243d1f8f76676fb54ed9b8749ccd

SHA-256:
429468c1a9ee436fc484737d78685e1e1e57dc3ee9cbc8f44bcd1455a360f1dc

Scanner detections:
12 / 68

Status:
Adware

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

Analysis date:
5/10/2024 10:05:37 PM UTC  (today)

Scan engine
Detection
Engine version

Avira AntiVirus
Adware/BrowseFox.aol
7.11.188.32

AVG
BrowseFox.F
2015.0.3282

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.141123

Comodo Security
Application.Win32.BrowseFox.JM
20160

Dr.Web
Trojan.BPlug.167
9.0.1.0327

ESET NOD32
Win32/BrowseFox (variant)
8.10764

K7 AntiVirus
Trojan
13.185.14098

Malwarebytes
PUP.Optional.BrowseStudio.A
v2014.11.23.10

McAfee
BrowseFox-FRR
5600.6938

NANO AntiVirus
Trojan.Win32.BPlug.dfohwl
0.28.6.63474

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

Reason Heuristics
PUP.BrowseStudio.M
14.11.23.10

File size:
244.7 KB (250,608 bytes)

Product version:
1.0.0.3

Copyright:
(c) BrowseStudio. All rights reserved.

Original file name:
BrowseStudioIEClient.dll

File type:
Dynamic link library (Win32 DLL)

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\inetcache\content.ie5\0t1ujq0y\browsestudio.dll

Digital Signature
Signed by:
BrowseStudio

Authority:
VeriSign, Inc.

Valid from:
9/2/2014 4:00:00 AM

Valid to:
9/3/2015 3:59:59 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:
11/21/2014 9:26:52 PM

OS version:
6.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
3072:Bn6oqa7ZcJ83Z2qJC0SzN+3aR4id15+s+xIaIKY9RsL1:BOa7Zce3BCR/wxIFTsL1

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:
6.3540

Developed / compiled with:
Microsoft Visual C++

Code size:
159 KB (162,816 bytes)

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