BestZiper

By GoldSparrow in Adware

Threat Scorecard

Popularity Rank: 7,484
Threat Level: 80 % (High)
Infected Computers: 3,366
First Seen: April 27, 2017
Last Seen: March 25, 2026
OS(es) Affected: Windows

The BestZiper software that you may be invited to install via a free software package is deemed as riskware and Potentially Unwanted Program (PUP). The BestZiper program does not offer ownership information and valid digital signature. The tool is promoted as a viable alternative to apps like 7Zip, WinRAR and WinZip. The BestZiper app may enable users to open, pack and extract data in the 7ZIP, RAR, ZIP and TAR file formats. You can install BestZiper via freeware packages only and its site on bestziper.com features misleading information. There are no contact details at bestziper.com, and the marketing pitch says:

'WinZip is trusted by millions of businesses and consumers to boost productivity, simplify file sharing and keep information private. The world's number one compression and encryption software, WinZip offers apps for all of today's most popular platforms and devices, giving users a better way to exchange files in the cloud, email and social media.'

As you can see, the text above does not cover BestZiper, and it is a blatant copy/paste of text on winzip.com/about.html. The site is dedicated to an archive manager named WinZip, which is developed by the Corel Corporation and has nothing to do with the BestZiper software. Apparently, the Web designers responsible for bestziper.com have no regard for fair completion and copyrights. There is little or no viable information uploaded to bestziper.com regarding the functionality, purpose, and origin of the BestZiper software. PC users that have installed the BestZiper tool have reported that the main program window may include advertisements in the form of banners. Additionally, the BestZiper appears to run in the system background and might show notifications in the tray area, which refer to ad-supported programs and limited-time deals on online stores.

Computer security experts summarized that the BestZiper software is an ad-supported program with dubious origin and distribution mechanism. The ads brought by BestZiper may include links to unreliable online shops and misleading information. The BestZiper app does not compare favorably to alternatives like 7Zip, and PC users may not find it very helpful. You may want to take into consideration that the BestZiper app may record information like your Internet history and downloads log to help affiliated advertisers deliver personalized offers to your desktop. By installing a reliable anti-spyware instrument, you can remove BestZiper safely.

Analysis Report

General information

Family Name: Trojan.Emotet.AA
Signature status: No Signature

Known Samples

MD5: f11213570933c30421daad32df1ff562
SHA1: f72fe9625ac38e6cad720f531d49152060dca64f
SHA256: BA1A6EFBCCC3D06A3525B3D04504D25A53E292B0997F14DDF9D121E834FD05D4
File Size: 9.33 MB, 9326592 bytes
MD5: f01d838f9e5c633433ed0badf1a041cf
SHA1: 8d191ba5255a7b695d1dfda3c70ace1879f7f7a6
SHA256: F694AACDF769EEB343A1B0F013A28FF6889653494D7427F8C00A7EF5562725E7
File Size: 266.75 KB, 266752 bytes
MD5: 2f2605eba65246d08444f4f5ea395e47
SHA1: c7c556036b55d370c9713b065c320985f404b807
SHA256: C8F3E210518A02DC89BCBAA3BD48F0909C8AE5BE180DC52EF2916B4D5A78BC88
File Size: 585.22 KB, 585216 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have debug information
  • File doesn't have exports table
  • File doesn't have relocations information
  • File doesn't have security information
  • File has exports table
  • File is 32-bit executable
  • File is either console or GUI application
  • File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
  • File is Native application (NOT .NET application)
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  • File is not packed
  • IMAGE_FILE_DLL is not set inside PE header (Executable)
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Icons

Windows PE Version Information

Name Value
Company Name SystemSoft Corporation
File Description
  • Application MFC XtraSetup
  • filegen
File Version
  • 3, 0, 0, 0
  • 1, 0, 0, 1
Internal Name
  • filegen
  • XtraSetup
Legal Copyright
  • Copyright (C) 1998
  • Copyright © 1997-1998 SystemSoft Corporation
Legal Trademarks SystemWizard
Original Filename
  • filegen.exe
  • XtraSetup.EXE
Private Build 06/04/1998
Product Name
  • Application XtraSetup
  • Filegen
Product Version
  • 3, 0, 0, 0
  • 1, 0, 0, 1

File Traits

  • HighEntropy
  • Installer Version
  • x86

Block Information

Total Blocks: 2,315
Potentially Malicious Blocks: 43
Whitelisted Blocks: 2,008
Unknown Blocks: 264

Visual Map

0 0 0 ? ? 0 0 0 0 ? 0 0 ? 0 ? 0 0 ? ? 0 ? 0 0 0 ? ? ? 0 0 0 0 0 0 0 0 0 0 ? ? ? ? ? ? ? ? ? ? 0 0 ? 0 0 0 ? ? 0 0 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 0 ? ? ? ? ? 0 0 0 0 0 0 0 ? ? ? ? 0 0 ? 0 0 0 0 ? 0 ? ? ? ? ? ? ? ? ? 0 0 0 0 0 ? ? ? 0 0 0 0 ? 0 0 0 0 0 0 ? ? ? ? ? ? 0 0 0 0 0 0 0 ? ? ? 0 0 0 0 0 0 0 0 0 0 ? ? ? ? ? ? ? ? ? ? ? ? 0 x x ? ? 0 ? x x ? ? 0 ? x ? ? ? ? x ? 0 0 0 0 x x x x x 0 ? x ? ? 0 ? ? ? ? ? x ? 0 x ? 0 0 ? 0 0 0 0 0 0 ? 0 0 0 0 x 0 ? 0 0 ? 0 0 0 0 ? 0 ? x ? x x ? ? 0 0 ? ? 0 x ? ? x ? ? 0 0 x x ? ? ? 0 0 ? ? ? x ? ? 0 0 0 ? x ? x ? ? ? ? x ? ? ? x x 0 x x ? 0 ? ? 0 ? 0 x ? x ? ? 0 0 ? x ? x 0 0 x x ? ? ? ? ? ? x ? x ? ? ? x x x ? ? 0 0 ? 0 0 ? ? 0 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 ? ? 0 ? ? ? 0 0 0 0 0 0 0 0 0 ? 0 0 ? ? ? ? 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ? ? ? ? ? 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ? ? ? 0 0 1 ? 0 0 ? ? ? 0 ? ? ? 0 ? ? ? ? ? ? ? ? ? ? 0 0 ? 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 x 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 ? 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ? 0 0 0 0 0 0 0 0 0 x 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ? 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
... Data truncated
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Files Modified

File Attributes
c:\users\user\appdata\local\temp\wzse684.tmp Synchronize,Write Attributes

Windows API Usage

Category API
Anti Debug
  • IsDebuggerPresent
User Data Access
  • GetUserObjectInformation

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