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windows8codecs_setup.exe

Rspark LLC

This is the OutBrowse Revenyou installer which bundles offers for additional third party applications that may be unwanted and installed without consent. The application windows8codecs_setup.exe by Rspark 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 windows8codecs.org.
Publisher:
Rspark LLC  (signed and verified)

MD5:
04d77c1486bc4271e1d3577f986db405

SHA-1:
450622a68c5ad23f7510e232a467e09d252640ce

SHA-256:
dfe6eb20366de865206e0d5ffa6f304db842c19699bc737bebbdb4713932580d

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:
4/18/2024 11:29:46 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.Rspark.Bundler (M)
15.11.26.4

File size:
628.3 KB (643,368 bytes)

File type:
Executable application (Win32 EXE)

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

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\windows8codecs_setup.exe

Digital Signature
Signed by:
Rspark LLC

Authority:
COMODO CA Limited

Valid from:
2/12/2014 12:00:00 AM

Valid to:
2/12/2015 11:59:59 PM

Subject:
CN=Rspark LLC, O=Rspark LLC, STREET="2929 1st ave #405", L=Seattle, S=Washington, PostalCode=98121, C=US

Issuer:
CN=COMODO Code Signing CA 2, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
00E4DA7826149424E5DF9F3646FF2E80B9

File PE Metadata
Compilation timestamp:
12/5/2009 10:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:jbb8jNw+nH/+jclz7FUYs7846vMb9Fe7brjhdQViAIMagxQzOJR1ue8PR5fc8vyX:jbbsdFUYs78Hkr+bvhphMCzO/Ye186X

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:
7.9809

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

The file windows8codecs_setup.exe has been seen being distributed by the following URL.

http://windows8codecs.org/.../windows8codecs_setup.php

Remove windows8codecs_setup.exe - Powered by Reason Core Security
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