Should I block it?

98%
Yes, 98% block recommendation.
Possible reasons:
Multiple malware detections
Performance resource utilization

VersionsAdditional versions

1, 0, 0, 1 27.27%
1, 0, 0, 1 9.09%
1, 0, 0, 1 18.18%
1, 0, 0, 1 9.09%
1, 0, 0, 1 9.09%
1, 0, 0, 1 9.09%
1, 0, 0, 1 9.09%
1, 0, 0, 1 9.09%
(Note, Mindspark Interactive Network publishes each variation of this file with the same version, but the hashes are unique.)

Relationships

NP4zEISb.dll

VideoDownloadConverter Installer Plugin Stub by Mindspark Interactive Network (Signed)

Remove NP4zEISb.dll
Version:   1, 0, 0, 1
MD5:   f9ab953b6fbb273a9776f88292846051
SHA1:   82d1e3611730970b3837802c9f48a5e5f43eb97e
SHA256:   04c8c5dd2c836c5c259439f663f31ccd4529906850dd97fb6438cc46914ad788
Warning 10 antivirus scanners has detected malware.

Overview

np4zeisb.dll is malware that is loaded as dynamic link library that runs in the context of the Google Chrome web browser. The file is digitally signed by Mindspark Interactive Network which was issued by the VeriSign certificate authority (CA).

DetailsDetails

File name:np4zeisb.dll
Publisher:VideoDownloadConverter
Product name:VideoDownloadConverter Installer Plugin Stub
Description:VideoDownloadConverter Installer Plugin Stub for 32-bit Windows
Typical file path:C:\Program Files\videodownloadconverter_4zei\installr\5.bin\np4zeisb.dll
File version:1, 0, 0, 1
Product version:2, 3, 0, 0
Size:30.07 KB (30,792 bytes)
Certificate
Issued to:Mindspark Interactive Network
Authority (CA):VeriSign
Effective date:Monday, April 9, 2012
Expiration date:Wednesday, May 6, 2015
Digital DNA
File packed:No
.NET CLR:No
More details

BehaviorsBehaviors

Google Chrome plugins
Stored per user in the directory 'Google\Chrome\User Data\Default\Preferences'
  • Name: 'NP4zEISB.dll'
Mozilla plugins
  • @ei.VideoDownloadConverter_4z.com/Plugin

MalwareMalware detections

Based on 40+ industry antivirus scanners, 10 of them detected the following malware.
Antivirus engineEngine versionDetection
AhnLab V3 Internet Security 2013.02.08 Adware/Win32.MyWebSearch
Antiy Labs AVL 2.0.3.7 WebToolbar/Win32.MyWebSearch.gen
avast! 6.0.1289.0 Win32:PUP-gen [PUP]
AVG 2014.0.3629 Skodna.Generic.PU
ESET NOD32 7.7983 Win32/Toolbar.MyWebSearch
Kaspersky 9.0.0.837 not-a-virus:WebToolbar.Win32.MyWebSearch.rh
Kingsoft 2013.1.8.219 Win32.Troj.Generic.a.(kcloud)
Trend Micro HouseCall 9.700.0.1001 TROJ_GEN.RCBH1B6
Vba32 AntiVirus 3.12.20.2 WebToolbar.MyWebSearch.rh
VIPRE Antivirus 15432 MyWebSearch.J (v) (not malicious)

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Microsoft Windows XP 45.45%
Windows 7 Ultimate 27.27%
Windows 8 9.09%
Windows 7 Starter 9.09%
Windows Vista Home Basic 9.09%

Distribution by countryDistribution by country

Thailand installs about 18.18% of VideoDownloadConverter Installer Plugin Stub.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Hewlett-Packard 42.86%
Acer 42.86%
Sahara 14.29%
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