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setup.exe

Mega Browse

This is the installer and setup program from the Mega Browse 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 Mega Browse has been detected as adware by 11 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:
Mega Browse  (signed and verified)

MD5:
1ba4d5a58bb1e8c625ca676a9fa1345f

SHA-1:
55c984d793bef539311c599ecde0918e88f29ec7

SHA-256:
193130e4d8a45211b345b021ae01945cb9e373f7e55e3dfbe36646a1e6f0cfaa

Scanner detections:
11 / 68

Status:
Adware

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

Analysis date:
5/28/2024 4:24:40 PM UTC  (today)

Scan engine
Detection
Engine version

Comodo Security
Application.Win32.Altbrowse.AK
17924

Dr.Web
Trojan.BPlug.28
9.0.1.074

ESET NOD32
Win32/BrowseFox (variant)
8.9538

Kaspersky
not-a-virus:AdWare.Win32.Agent
14.0.0.4170

Malwarebytes
PUP.Optional.MegaBrowse.A
v2014.03.15.01

NANO AntiVirus
Riskware.Win32.Agent.cqycvd
0.28.0.58394

Reason Heuristics
PUP.Installer.MegaBrowse.F
14.3.19.0

Rising Antivirus
NS:PUF.SilenceInstaller!1.9DDF
23.00.65.14313

Trend Micro House Call
TROJ_GE.203227CA
7.2.74

Vba32 AntiVirus
AdWare.Agent
3.12.24.3

VIPRE Antivirus
Yontoo
27338

File size:
2.7 MB (2,836,568 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:
Mega Browse

Authority:
VeriSign, Inc.

Valid from:
1/21/2014 4:00:00 PM

Valid to:
1/22/2015 3:59:59 PM

Subject:
CN=Mega Browse, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Mega Browse, 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:
151F3F44EFA5ADB264205FBF9F779B3D

File PE Metadata
Compilation timestamp:
12/5/2009 2:52:01 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
49152:aNWF85AdRiOCjwz0gfiqS/N19Rkan96PmI9n1ThWl80:aNWu5WR/Hz0DN7QanoZ9n1NWO0

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...
 
[+]

Entropy:
7.9986

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://install-cdn.megabrowse.biz/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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