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mediaplayer_update.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 mediaplayer_update.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. It is also typically executed from an Internet Explorer cache folder. The file has been seen being downloaded from get.up1004.info.
Publisher:
KMVKV  (signed by BeST ApP)

Product:
KMVKV

Version:
1320.15915.886.9429

MD5:
1482b2b688c1fdaab291c28403eabe3c

SHA-1:
c546def77551eda09c82b1a17a10eff2037249df

SHA-256:
d59961cdcf5de75cdaee878e7a45051f01b72ec2229635b8532d80436a7ea843

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:
11/16/2024 11:58:20 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.BeSTApP.Bundler (M)
16.5.17.2

File size:
558.3 KB (571,656 bytes)

Product version:
1320.15915.886.9429

Copyright:
KMVKV

Trademarks:
KMVKV

File type:
Executable application (Win32 EXE)

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

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

Digital Signature
Signed by:
BeST ApP

Authority:
thawte, Inc.

Valid from:
6/30/2015 2:00:00 AM

Valid to:
12/18/2015 12:59:59 AM

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:
64E1250DF629BD3901AA90A77D70239E

File PE Metadata
Compilation timestamp:
12/5/2009 11:52:12 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:HrD9ex8G5CE5qYODOrenG1TYRQiegxcEI2ENXFY:HP9K8GgE5rmbWiRX7MXFY

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...
 
[+]

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

http://get.up1004.info/1442341492/1442341492/1442341492?10979203245ZmVrKys9cDowLjQwNR1dNDA5MTYvIWs9KTEuMjIjbDksJXBpaFtzY3FsXWhkPTtobmxsbF9gIDEwRFplX2dicCJfMD0nH0o7NURXSWsvd2JTW3Z1ZkY ZUw4P2E STN0UmVSajE8YWQ/.../TlN6cWhpT0M0STBOaEc4MDBCVG1QXlQyTEVpYUp1YE11QEo3ZGVHNHZRYV1jZ2M 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 P3NgLjJjTDdqMmY1Rk5GMEpNVzoxOVBVcGpJPU1HXUtOaUtnaD4zdWNqJltVM

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