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skype.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.exe by OUTBROWSE has been detected as adware by 11 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. The file has been seen being downloaded from www.ifreedownloadss.com.
Publisher:
OUTBROWSE  (signed and verified)

MD5:
62fd9371274054caa36a584d5626a802

SHA-1:
6eeeab229cdd1d3ce22e03f5edcad83f31771ccd

SHA-256:
50e28164a4d6b2033012ace132af610f2060fd8781307a6e63d64518174041e0

Scanner detections:
11 / 68

Status:
Adware

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

Description:
This is also known as bundleware, or downloadware, which is an downloader designed to simply deliver ad-supported offers in the setup routine of an otherwise legitimate software.

Analysis date:
11/27/2024 6:48:43 AM UTC  (today)

Scan engine
Detection
Engine version

AhnLab V3 Security
PUP/Win32.OutBrowse
2014.06.25

Avira AntiVirus
APPL/Downloader.Gen
7.11.156.166

AVG
Generic
2015.0.3433

Dr.Web
Adware.Downware.2081
9.0.1.05190

G Data
Win32.Application.Outbrowse
14.6.24

K7 AntiVirus
Unwanted-Program
13.180.12512

Kaspersky
not-a-virus:AdWare.Win32.OutBrowse
15.0.0.463

Malwarebytes
PUP.Optional.OutBrowse
v2014.06.24.10

Reason Heuristics
PUP.OUTBROWSE.F
14.8.7.20

Sophos
OutBrowse Revenyou
4.98

VIPRE Antivirus
Threat.4784459
29708

File size:
976.5 KB (999,920 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.exe

Digital Signature
Signed by:
OUTBROWSE

Authority:
COMODO CA Limited

Valid from:
4/6/2014 8:00:00 PM

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

Subject:
CN=OUTBROWSE, O=OUTBROWSE, STREET=Bialik Number: 143, L=Ramat Gan, S=Israel, PostalCode=5252337, C=IL

Issuer:
CN=COMODO Code Signing CA 2, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
00A5F03C3A375C11FD6C1C160EE8BFF923

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):
12288:W5HN/Um3b7bt5ORv7OfUej1YY+oPfmH7OdIgbB1Nx0WkljfyU0NsA3wPPgMSHaIQ:Wsm3jWRCD+sdDkpYP3wPwn2arwpZ7V

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:
7.9247

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

http://www.ifreedownloadss.com/.../download.php?id=53aa064317e6e&i=us

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