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betterbrowsesetup.exe

BetterBrowse

This is the installer and setup program from the BetterBrowse branded Yontoo adware web browser extension. This adware injects various forms of advertisements in the user's web browser based on the HTML content and URLs viewed. Ad include banners, in-line context text links, coupons, and search. The program will install an auto-updating Windows service that will update the software with additional features. The application betterbrowsesetup.exe by BetterBrowse has been detected as adware by 3 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer.
Publisher:
BetterBrowse  (signed and verified)

MD5:
b6753b0788daee441bf22aa0c1bf093b

SHA-1:
1210697ce74c7f7a3f2f2bb8af994aa01963e000

SHA-256:
fa2bcc889ea41d7f1c0ae0d3bf4312ed617142b994c64a10fd192aedad8b2cb6

Scanner detections:
3 / 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:
4/24/2024 10:42:13 PM UTC  (today)

Scan engine
Detection
Engine version

Malwarebytes
PUP.Optional.BetterBrowse.A
v2014.01.02.09

Reason Heuristics
PUP.Installer.BetterBrowse.R
14.8.7.23

Rising Antivirus
NS:PUF.SilenceInstaller!1.9DDF
23.00.65.131220

File size:
226.4 KB (231,816 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\temp\betterbrowsesetup.exe

Digital Signature
Signed by:
BetterBrowse

Authority:
VeriSign, Inc.

Valid from:
9/27/2013 2:00:00 AM

Valid to:
9/28/2015 1:59:59 AM

Subject:
CN=BetterBrowse, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=BetterBrowse, 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:
12F4B87646B8BAF069AA302DE756FE85

File PE Metadata
Compilation timestamp:
12/5/2009 11:52:01 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:TZ+119nvrElZsOqnS8Kah/1RWBT5AYZm/G/Hca1:8nTwv8b1s15AB/G/8a

Entry address:
0x30CB

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 38, 6F, 44, 00, E8, F1, 2B, 00, 00, A3, 84, 6E, 44, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 30, 9C, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 80, 2E, 44, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, F0, 46, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

The file betterbrowsesetup.exe has been seen being distributed by the following URL.

https://bigfiles.hilton.com/seos/1000/mpd/x11370f0^16556cad4feb8ab6d017221c2800a1f8^2014-02-06 11:59:59^*^ck^rr^vi/11370/files/.../BetterBrowseSetup.exe

The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to wac.edgecastcdn.net  (72.21.81.13:80)

TCP (HTTP):
Connects to service.yontoo.com  (8.25.35.148:80)

TCP (HTTP):
Connects to api.yontoo.com  (8.25.35.15:80)

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