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Skype_setup.exe

OutBrowse

This is the OutBrowse Revenyou installer which bundles offers for additional third party applications that may be unwanted and installed without consent. The application Skype_setup.exe by OutBrowse has been detected as adware by 16 anti-malware scanners. The program is a setup application that uses the OutBrowse Revenyou installer. The setup routine uses the RevenYou.Com Pay Per Install platform (OutBrowse) which bundles additional software offers inclduing toolbars, extensions, PC utilities as well as other PUPs.
Publisher:
OutBrowse  (signed and verified)

MD5:
af59cf8b648864261bf2bfcdcea7d0e5

SHA-1:
c27ca0c9adb05a68bace8c3f1ca76029870f0368

SHA-256:
3c8ece56fb891978f066ba117fe377fc125ac0bba01a364d3a769e0865a4142b

Scanner detections:
16 / 68

Status:
Adware

Explanation:
Bundles additional adware offers during download and installation using the OutBrowse installer.

Description:
This 'download manager' is also considered bundleware, a utility designed to download software (possibly legitimate or opensource) and bundle it with a number of optional offers including ad-supported utilities, toolbars, shopping comparison tools and browser extensions.

Analysis date:
5/4/2024 9:35:28 PM UTC  (today)

Scan engine
Detection
Engine version

AhnLab V3 Security
PUP/Win32.OutBrowse
14.04.09

AVG
MalSign.OutBrowse
2015.0.3509

Comodo Security
Application.Win32.Outbrowse.G
18007

Dr.Web
Adware.Downware.1664
9.0.1.099

ESET NOD32
Win32/OutBrowse
8.9608

G Data
Win32.Application.OutBrowse
14.4.24

K7 AntiVirus
Unwanted-Program
13.176.11595

Kaspersky
not-a-virus:Downloader.NSIS.OutBrowse
14.0.0.4040

Malwarebytes
PUP.Optional.Outbrowse
v2014.04.09.10

McAfee
Artemis!AF59CF8B6488
5600.7165

NANO AntiVirus
Trojan.Win32.Generic.cthmwf
0.28.0.58720

Qihoo 360 Security
Win32/Virus.Downloader.ad6
1.0.0.1015

Reason Heuristics
PUP.Installer.OutBrowse.L
14.8.7.20

Sophos
OutBrowse
4.98

Trend Micro House Call
TROJ_GEN.F47V0110
7.2.99

VIPRE Antivirus
OutBrowse
27798

File size:
106.6 KB (109,128 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
OutBrowse Revenyou (using Nullsoft Install System)

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\skype_setup.exe

Digital Signature
Signed by:
OutBrowse

Authority:
VeriSign, Inc.

Valid from:
10/23/2013 8:00:00 PM

Valid to:
10/24/2014 7:59:59 PM

Subject:
CN=OutBrowse, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=OutBrowse, L=Ramat Gan, S=Ramat Gan, C=IL

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:
56A6FE571611B68C9224798AD62913CA

File PE Metadata
Compilation timestamp:
12/5/2009 5:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
3072:RgXdZt9P6D3XJbC35Ky/9XO3jR0eWSzUu/0WJ:Re34c3UQ9OzRgW/cC

Entry address:
0x30FA

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, 18, EC, 42, 00, E8, F1, 2B, 00, 00, A3, 64, EB, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 8F, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, E3, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 40, 43, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.6772

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

The file Skype_setup.exe has been seen being distributed by the following 2 URLs.

http://www.load4free.org/.../Go.aspx?ID=Skype

http://www.load4free.org/downloads/.../Skype_setup.exe

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