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mahjong1.exe

Freegies Mahjong

OutBrowse LTD

This is the OutBrowse Revenyou installer which bundles offers for additional third party applications that may be unwanted and installed without consent. The application mahjong1.exe by OutBrowse has been detected as adware by 10 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 s3.amazonaws.com.
Publisher:
Freegies  (signed by OutBrowse LTD)

Product:
Freegies Mahjong

Version:
1.0

MD5:
2cd42c9e0a5f460cc4ddec17241871e6

SHA-1:
6f7fac7c07db6c428758ca0e9d7529d2f6231b5a

SHA-256:
35d936671bf887967368dea0be8e0d9be8915d2de052818bae6ce6824dfdf927

Scanner detections:
10 / 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:
4/26/2024 1:29:29 PM UTC  (today)

Scan engine
Detection
Engine version

AVG
MalSign.Generic
2015.0.3390

Comodo Security
Application.Win32.OutBrowse.D
17077

Dr.Web
Adware.Downware.1336
9.0.1.0218

ESET NOD32
Win32/OutBrowse (variant)
8.8896

herdProtect (fuzzy)
variant of mahjong1.exe (Adware)
2014.9.27.22

Malwarebytes
PUP.Optional.Smart
v2014.08.06.04

McAfee
Artemis!05ADAF18F4D6
5600.7046

Reason Heuristics
PUP.OutBrowse.N
14.8.7.17

Sophos
OutBrowse Revenyou
4.94

Trend Micro House Call
TROJ_GEN.F47V0926
7.2.218

File size:
599.8 KB (614,152 bytes)

Copyright:
© Freegies

Trademarks:
Freegies Mahjong

File type:
Executable application (Win32 EXE)

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

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\mahjong1.exe

Digital Signature
Signed by:
OutBrowse LTD

Authority:
Symantec Corporation

Valid from:
2/25/2013 6:00:00 PM

Valid to:
2/26/2014 5:59:59 PM

Subject:
CN=OutBrowse LTD, O=OutBrowse LTD, L=Ramat Gan, S=Ramat Gan, C=IL, SERIALNUMBER=514686914, OID.2.5.4.15=Private Organization, OID.1.3.6.1.4.1.311.60.2.1.3=IL

Issuer:
CN=Symantec Class 3 Extended Validation Code Signing CA, OU=Symantec Trust Network, O=Symantec Corporation, C=US

Serial number:
06C1C2AE3E180ADDA27BBF2BD8EAC0E7

File PE Metadata
Compilation timestamp:
12/5/2009 4:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:+eSlJIex9hTjiA7DL0GiTgS63qpRnS2yw7s4o2ISNorFusxf16:+1vn99L0GmWqnnS2yEnfsxk

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:
7.9775

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

The file mahjong1.exe has been seen being distributed by the following URL.

http://s3.amazonaws.com/cdn.ppdownload.com/.../Mahjong1.exe

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