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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. The file has been seen being downloaded from clksite.com.
Publisher:
Best App  (signed and verified)

MD5:
9fb573bd6b0aefe2a266f7c266e3fe98

SHA-1:
74daf3c69d8268a5108d087887d415379da086fc

SHA-256:
a1504898ff2a5dc24c326b2c6bdb9619864608a6de2d05c9d479012fab5b12b0

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:
5/12/2024 6:38:42 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.BestApp.Bundler (M)
16.3.25.12

File size:
566 KB (579,632 bytes)

File type:
Executable application (Win32 EXE)

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

Language:
Language Neutral

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

Digital Signature
Signed by:
Best App

Authority:
GlobalSign nv-sa

Valid from:
12/5/2014 4:37:04 PM

Valid to:
12/6/2015 4:37:04 PM

Subject:
CN=Best App, O=Best App, L=Dublin, C=IE

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

Serial number:
11215B01F9256F0A054A3A5BFF4B3A8312B6

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:TviscOInUHu7GVj1xuVyE/jDtW1Rpw4tbtrcnBG4YseigJ3P6++4OR:TaUOb1vtW1wub1cnRYseiZ+s

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 installation.exe has been seen being distributed by the following URL.

http://clksite.com/adServe/adClick?ai=08zHTxdapFU4z5qReyfiT7e5exvOoc10L02jp9jYpVus0Bm8zpv1VvY YSy6fHkG6z2eweOiB576 J7z7Cr0DQ70sCjuHHHROFK9knXEl6riadXEN/hJDpy9SN0wtKO6 twNUUMIT7PThY8AEMjKu/0f lj17R0hhYTijlpgXyRCuDvDKAuNn0Y2ytJHbvbkL&ui=s BkHroMZ9PiIko xPjWTfbWwvziNp/.../v KBsn81Cx2&src=BANNER

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