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win8dvdplayer.exe

KBM2 Installer

Best Download Manager

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application win8dvdplayer.exe by Best Download Manager has been detected as adware by 8 anti-malware scanners. During install, it bundles potentially unwanted software on a user's computer at the same time without adequate consent. The file has been seen being downloaded from api.kbm2.com and multiple other hosts.
Publisher:
Best Download Manager   (signed by Best Download Manager)

Product:
KBM2 Installer

Version:
2.5.1.0

MD5:
181255a2d747258a8b02e8c819c645ef

SHA-1:
d1c28a2d33cccc201b12df346bc3dd1be4ece844

SHA-256:
40bcf767d49c149345eb1eceb59bd208485900bdc870e46b7aa462a0765ec6bb

Scanner detections:
8 / 68

Status:
Adware

Explanation:
May bundle additional potentially unwanted software such as adware during setup.

Analysis date:
4/26/2024 8:04:03 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Riskware.Agent
7.1.1

AVG
AdInject.Bdmngr
2015.0.3509

Dr.Web
Adware.Plugin.85
9.0.1.0100

ESET NOD32
Win32/KBM (variant)
8.9646

Malwarebytes
PUP.Optional.BundleInstaller.A
v2014.04.10.03

Reason Heuristics
PUP.Installer.BestDownloadManager.N
14.8.8.0

Trend Micro House Call
TROJ_GEN.F47V0104
7.2.100

VIPRE Antivirus
sterkly LLC
28115

File size:
541.6 KB (554,632 bytes)

Product version:
2.5.1.0

Copyright:
(c) Best Download Manager . All rights reserved.

Original file name:
KBM2.exe

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\downloads\win8dvdplayer.exe

Digital Signature
Signed by:
Best Download Manager

Authority:
VeriSign, Inc.

Valid from:
7/25/2013 8:00:00 AM

Valid to:
7/26/2015 7:59:59 AM

Subject:
CN=Best Download Manager, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Best Download Manager, L=Carlsbad, S=California, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
5F3BBF9CAABCE7C81AB69ABF7371A064

File PE Metadata
Compilation timestamp:
8/8/2013 3:25:15 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:egq6uX5c0RzWguzZylIAllGVytvHdKme7IZopYniQss:eR610ZluglqytYmesZoAiQr

Entry address:
0x3A3C0

Entry point:
E8, 0E, 6F, 00, 00, E9, 89, FE, FF, FF, 3B, 0D, D0, 0B, 47, 00, 75, 02, F3, C3, E9, 95, 6F, 00, 00, 8B, FF, 55, 8B, EC, 56, 8B, 75, 14, 85, F6, 75, 04, 33, C0, EB, 61, 83, 7D, 08, 00, 75, 13, E8, D9, 35, 00, 00, 6A, 16, 5E, 89, 30, E8, 6C, 75, 00, 00, 8B, C6, EB, 48, 83, 7D, 10, 00, 74, 16, 39, 75, 0C, 72, 11, 56, FF, 75, 10, FF, 75, 08, E8, 66, 70, 00, 00, 83, C4, 0C, EB, C7, FF, 75, 0C, 6A, 00, FF, 75, 08, E8, B4, 31, 00, 00, 83, C4, 0C, 83, 7D, 10, 00, 74, BB, 39, 75, 0C, 73, 0E, E8, 8F, 35, 00, 00, 6A...
 
[+]

Entropy:
6.2838

Code size:
342.5 KB (350,720 bytes)

The file win8dvdplayer.exe has been seen being distributed by the following 2 URLs.

http://api.kbm2.com/downloadLauncher.ashx?cid=1268

http://www.win8dvd.com/download

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