home

setup.exe

Browse Fox

This is the installer and setup program from the Browse Fox 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 background service that will update the software with additional features. The application setup.exe by Browse Fox has been detected as adware by 17 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. 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:
Browse Fox  (signed and verified)

MD5:
bb03301ecc9c9b9d87fa04af87fabf8f

SHA-1:
8ac5b6e739d4716e33ceae5ff1b6096da7b2e549

SHA-256:
94b54f5fbf63f6938dcf0c96800b0125e945a3037d27c8b763a5c4c4ce9e12c5

Scanner detections:
17 / 68

Status:
Adware

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

Analysis date:
4/24/2024 6:21:45 PM UTC  (today)

Scan engine
Detection
Engine version

AVG
MalSign.Skodna.BrowseFox
2016.0.2904

Comodo Security
Application.Win32.BrowseFox.A
17918

Dr.Web
Adware.Searcher.2574
9.0.1.0339

ESET NOD32
Win32/BrowseFox
9.9532

Fortinet FortiGate
W32/BrowseFox.C
12/5/2015

K7 AntiVirus
Unwanted-Program
13.176.11422

Kaspersky
not-a-virus:AdWare.Win32.Agent
14.0.0.1017

Malwarebytes
PUP.Optional.BrowseFox.A
v2015.12.05.01

McAfee
Artemis!1307BA92E25B
5600.6560

NANO AntiVirus
Riskware.Win32.Agent.crkvek
0.28.0.58101

Qihoo 360 Security
Win32/Trojan.2ba
1.0.0.1015

Reason Heuristics
PUP.Yontoo.BrowseFox.Installer (M)
15.12.5.13

Rising Antivirus
NS:PUF.SilenceInstaller!1.9DDF
23.00.65.151203

Sophos
Generic PUA PF
4.98

Trend Micro House Call
TROJ_GEN.F47V0930
7.2.339

Vba32 AntiVirus
AdWare.Agent
3.12.24.3

VIPRE Antivirus
Yontoo
27288

File size:
845.1 KB (865,384 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\setup.exe

Digital Signature
Signed by:
Browse Fox

Authority:
VeriSign, Inc.

Valid from:
7/29/2013 8:00:00 PM

Valid to:
7/30/2014 7:59:59 PM

Subject:
CN=Browse Fox, OU=Digital ID Class 3 - Microsoft Software Validation v2, 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:
3DA9F504A9E9628C2224F40C9EA90C86

File PE Metadata
Compilation timestamp:
12/5/2009 5:50:41 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
24576:VqdyI283CAhDRiYwR+Q+xZah/uXr0b28/:cdv28SAdRiOHC/jb28/

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, 3F, 42, 00, E8, F1, 2B, 00, 00, A3, 84, 3E, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 30, F4, 41, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 80, 36, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 90, 42, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.9889

Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

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

http://wpc.0952.edgecastcdn.net/800952/.../setup.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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