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setup.exe

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 setup.exe by OUTbrowse has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the OutBrowse Revenyou installer. The file has been seen being downloaded from get.default-page.com.
Publisher:
OUTbrowse Ltd  (signed and verified)

MD5:
8a18604499e466b88480bce7574aaf1a

SHA-1:
fb9d1c93d69e49ac97d696e9ea6b9ab4dee7b695

SHA-256:
7eecd18126bbda8a23e0eb64b0188f076a979199e479fe228a981f65437aa18b

Scanner detections:
1 / 68

Status:
Adware

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

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:
4/24/2024 3:54:25 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse (M)
16.8.6.12

File size:
564.7 KB (578,240 bytes)

File type:
Executable application (Win32 EXE)

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

Language:
Language Neutral

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

Digital Signature
Signed by:
OUTbrowse Ltd

Authority:
GlobalSign nv-sa

Valid from:
8/18/2014 8:30:42 PM

Valid to:
8/19/2015 8:30:42 PM

Subject:
CN=OUTbrowse Ltd, OU=Tech, O=OUTbrowse Ltd, L=Ramat Gan, S=Israel, C=IL

Issuer:
CN=GlobalSign CodeSigning CA - SHA256 - G2, O=GlobalSign nv-sa, C=BE

Serial number:
11218698DE6360060E5B84AA941E48BB9A93

File PE Metadata
Compilation timestamp:
12/6/2009 5:50:52 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:iR0vUjCMjnGaft+rCYRu42+bkQ/IHJIbIUEq+J4kl/nDIGNPvGhfVZMYEr:i2AXDftmCYT7YQ/Ie6v4useW5H5E

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:
7.9765

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

http://get.default-page.com/.../Get?p=7317&d=17560&l=1694&n=0&clickid=428865509&d1=31860&d2=-1&d3=-1&d4=-1&d5=-1&filename=setup

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