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moozysetup.exe

BEST app

This is the OutBrowse Revenyou installer which bundles offers for additional third party applications that may be unwanted and installed without consent. The application moozysetup.exe by BEST app 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.file21desktop.com.
Publisher:
BEST app  (signed and verified)

MD5:
4c548bf8037667e286e442ab4134d749

SHA-1:
f9bd8ae4111334d91bc148d058bb0037ad875e10

SHA-256:
861860f6795fec6da4c501f53d7fc54446c61994abd8c9f4f54141d2f165bd5b

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 an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
1/13/2025 4:05:58 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.BESTapp.Bundler (M)
16.3.12.18

File size:
572.3 KB (586,016 bytes)

File type:
Executable application (Win32 EXE)

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

Language:
Language Neutral

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

Digital Signature
Signed by:
BEST app

Authority:
thawte, Inc.

Valid from:
1/20/2015 5:00:00 AM

Valid to:
12/18/2015 4:59:59 AM

Subject:
CN=BEST app, O=BEST app, L=Dublin, S=Dublin, C=IE

Issuer:
CN=thawte SHA256 Code Signing CA, O="thawte, Inc.", C=US

Serial number:
58EA179BCF0212E7DFB0823BBA3C25

File PE Metadata
Compilation timestamp:
12/6/2009 3:50:52 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:Fx0MiHpPFY++PBJKmWVlgN2eHXvGOtqwxJJQPq7rtxvw1hEkD0:Fe9PFY++PBJ8VldeHXvGy6PqXCD4

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:
7.9705

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

http://get.file21desktop.com/DownloadManager/Get?p=2788&d=2792&l=2707&n=1&filename=MoozySetup&productname=Moozysetup&tyurl=http://.../1os5ON0

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