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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 rhtag.com.
Publisher:
Best App  (signed and verified)

MD5:
5e3037e0668a66218548f3e2427c294a

SHA-1:
6d3744727b0b52a596f4eacdcf37fa53e4037626

SHA-256:
ec303a8c2c9e50b34790b906009dc46ab185684805fd0814de63577b2ff3f78c

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:
11/5/2024 8:28:14 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse (M)
16.8.2.8

File size:
566 KB (579,632 bytes)

File type:
Executable application (Win32 EXE)

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

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

Digital Signature
Signed by:
Best App

Authority:
GlobalSign nv-sa

Valid from:
12/5/2014 3:37:04 AM

Valid to:
12/6/2015 3:37:04 AM

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:
12/5/2009 4:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:AciscOInUHu7GVj1xuVyE/jDtW1Rpw4tbtrcnBG4YseigJ3P6++4OQ:A1UOb1vtW1wub1cnRYseiZ+b

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:
7.9732

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://rhtag.com/adServe/adClick?ai=08zHTxdapFU KC9D3ukAfByWKKvk8eBABfNju9ObTCBTOlVSBHk55bqFJSW quhSfpTdOsFEIkWX 7KQCFXtliOUFjCfKMWEOtTaLAU1op40Z5shhCjrSTL3Xfktnym2uNAo2uQiMMwCSDCfvIM6RgfY YSy6fHkG6z2eweOiB576 J7z7Cr0DQ70sCjuHHHR5g/WjLQAQl0YT5EkVBx4tiRWv1IoXw8KJuyw DGbYNFHThY8AEMjKu0zRmpWwMKFEYTijlpgXyRC5v4wcluODqGWSQsQHXjql&ui=gh9VG786rh0tSOwzs76ue/.../12mUjgLJO6yo8nVS1EjEJQScrQOxU6OYf&src=BANNER

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