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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 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 mbttd.com.
Publisher:
OutBrowse  (signed and verified)

MD5:
c34b7cf53333c9e9058ce7afb3a98db3

SHA-1:
c6dd20f032b7ed1d12607f6e4946a922431ae8fb

SHA-256:
0a71f2c32d802c8c8c915073489a8aa4cf2034047d2d385ecf233cc2a9a7b546

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:
4/19/2024 8:21:54 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse (M)
16.8.7.1

File size:
108.2 KB (110,776 bytes)

File type:
Executable application (Win32 EXE)

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

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

Digital Signature
Signed by:
OutBrowse

Authority:
VeriSign, Inc.

Valid from:
10/23/2013 7:00:00 PM

Valid to:
10/24/2014 6:59:59 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:ZgXdZt9P6D3XJmCrb5Ky/9XO3jR0eWSzUu/0WNR:Ze34VfUQ9OzRgW/c+

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...
 
[+]

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://mbttd.com/engine/.../cyc3VwcGx5X3BsYXRmb3JtX2FjY291bnRfaWQ9NDA1JnN1cHBseV9wbGF0Zm9ybV9pZD00NzUmbGluZV9pdGVtX2lkPTcyMjQ?ext_click_id=XbLaS3qMGY5ADxyqYil9M1DQGUFSr1DQZmEWmiINTACJfgbJN0wMITUz8E6qJnluZCRyTNhVCcfs_PsS_1BzBmlEjNe0eSqMF0Gopflsp33FUyX4z9yUvxPe6yiBpkTejG6-bgnPot3g54ZbF6vE1QBruWEufZm47CwMZ3oDd3viKZN1IJj75N6lz97HoR71UgKnzXC9EQp8kHFX3uhVCG1bUb6b0J8aytFgphksLobCKfz7WnyKfMa7uMYXn6Qa-E1Iif4py3hzl_cURgBlLq7bWRoY5c-_q_TBBsP6yFzLGoYpWlpcus6NjVblFhXJoacSi8xxaJ0bG3jHyJQvv5LHC1GSrFl7ef6ql0EGwZE7YDOW--ZCbDPvdD43bVWh3v4Tx777zjI-zdarLTIe8fyC

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