installation.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 installation.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.
Publisher:
BEST app  (signed and verified)

MD5:
59ff8ce110539f15c85a4128b4761463

SHA-1:
a2a0f0c02e1ae8d814724aa154c8f7808073984f

SHA-256:
ef324cdd49bd09490781841ec6e7597a905be05d7eaeade388402f482c8996f9

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 'download manager' is also considered bundleware, a utility designed to download software (possibly legitimate or opensource) and bundle it with a number of optional offers including ad-supported utilities, toolbars, shopping comparison tools and browser extensions.

Analysis date:
1/13/2025 4:06:39 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.BESTapp.Bundler (M)
16.4.10.15

File size:
572.3 KB (586,000 bytes)

File type:
Executable application (Win32 EXE)

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

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

Digital Signature
Signed by:

Authority:
thawte, Inc.

Valid from:
1/19/2015 7:00:00 PM

Valid to:
12/17/2015 6:59:59 PM

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:
12/5/2009 5:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:bi0MiHpPFY++PBJKmWVlgN2eHXvGOtqwxJJQPq7rtxvw1hEkDY:bz9PFY++PBJ8VldeHXvGy6PqXCDM

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)

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