home

BrowseFox.OptChecker.dll

Browse Fox

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module BrowseFox.OptChecker.dll by Browse Fox has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat.
Publisher:
Browse Fox  (signed and verified)

Version:
1.0.5435.29439

MD5:
6f8006bc1da453e5d66f46e8a1296a99

SHA-1:
1be4542ad231d6b3121e6bebf00cd7997d4665aa

SHA-256:
c012276facba623865b4a96a20201b517b2de3de495da82a8959a72cfdb9b8eb

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
4/29/2024 9:17:13 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo
17.2.23.12

File size:
723.2 KB (740,592 bytes)

Product version:
1.0.5435.29439

Original file name:
BrowseFox.OptChecker.dll

File type:
Dynamic link library (Win32 DLL)

Language:
Language Neutral

Common path:
C:\Program Files\browsefox\bin\plugins\browsefox.optchecker.dll

Digital Signature
Signed by:
Browse Fox

Authority:
VeriSign, Inc.

Valid from:
8/4/2014 8:00:00 PM

Valid to:
9/4/2015 7:59:59 PM

Subject:
CN=Browse Fox, O=Browse Fox, 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:
01384FB7929C948C4A9ACD0BC2F3E8C0

File PE Metadata
Compilation timestamp:
11/18/2014 7:21:24 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
6.0

.NET CLR dependent:
Yes

Entry address:
0xB4A62

Entry point:
FF, 25, 00, 20, 40, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 02, 00, 00, 00, 72, 00, 00, 00, A4, 4A, 0B, 00, A4, 2C, 0B, 00, 52, 53, 44, 53, A9, FE, 82, 8E, DB, 1A, F8, 4D, 95, C2, A0, 35, 1F, C0, 57, 06, 01, 00, 00, 00, 44, 3A, 5C, 55, 74, 69, 6C, 69, 74, 69, 65, 73, 5C, 7A, 77, 7A, 6C, 6F, 64, 6B, 62, 2E, 77, 62, 33, 5C, 44, 65, 73, 6B, 74, 6F, 70, 5C, 44, 65, 73, 6B...
 
[+]

Entropy:
5.8785

Developed / compiled with:
Microsoft Visual C# / Basic .NET

Code size:
715 KB (732,160 bytes)

Remove BrowseFox.OptChecker.dll - Powered by Reason Core Security
herdProtect is a second line of defense malware removal platform powered by 68 anti-malware engines in the cloud. Since no single anti-malware program is perfect 100% of the time, herdProtect utilizes a 'herd' of multiple engines to guarantee the widest coverage and the earliest possible detection.