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setup.exe

BEst inSTall TLl

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 BEst inSTall TLl 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. It is also typically executed from an Internet Explorer cache folder. The file has been seen being downloaded from download.file8desktop.com.
Publisher:
TPVWA  (signed by BEst inSTall TLl)

Product:
TPVWA

Version:
6126.15818.1190.5315

MD5:
47c7434039758d75d8732c2723e9cc1e

SHA-1:
63e31941b24506862d4554fdaf85c9eba8007648

SHA-256:
0988a8e4b17e6d0ae5f4d067f5b44ce70bd25b3293394955ec23143101eed425

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:
6/17/2025 10:53:41 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.BEstinST.Bundler (M)
16.5.8.22

File size:
810.9 KB (830,376 bytes)

Product version:
6126.15818.1190.5315

Copyright:
TPVWA

Trademarks:
TPVWA

File type:
Executable application (Win32 EXE)

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

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\setup.exe

Digital Signature
Signed by:
BEst inSTall TLl

Authority:
thawte, Inc.

Valid from:
6/30/2015 5:30:00 AM

Valid to:
1/28/2016 5:29:59 AM

Subject:
CN=BEst inSTall TLl, O=BEst inSTall TLl, L=Dublin, S=Dublin, C=IE

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

Serial number:
505027BABCC52AD6A1AB7C1CB900B9B9

File PE Metadata
Compilation timestamp:
12/6/2009 4:22:12 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
24576:tLdP0yU9t3F51gTR2YUnBKbCz7xONHWKHx86:tRWt151IEYcKbE7xk2h

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, 1C, 45, 00, E8, F1, 2B, 00, 00, A3, 64, 1B, 45, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 37, 43, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, DB, 44, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, A0, 47, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.9876

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://download.file8desktop.com/1439921572/.../1439921572?44450544469Y2FwMDU6bDkyLS8iYDkwNC8iaDkuLS0iajgxIWxua15sX3BqXG1gOW9hcFxqdmVrJl8tOTAtKzUzNTQmXy45LS8nMSJgdG5caWVfaFhpYTk8Y29la2ofKSxvX21lYGohLipeXWlhbSUtLG5hXWZuYGFtJS0sXyJjWmtqOTQ0IWxuaDco

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