PUP.HiDef Media Player

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Last updated:

Threat Scorecard

Popularity Rank: 20,878
Threat Level: 10 % (Normal)
Infected Computers: 101,220
First Seen: December 16, 2013
Last Seen: August 20, 2026
OS(es) Affected: Windows

The detection of PUP.HiDef Media Player on your system indicates the presence of a potentially unwanted program (PUP) that may be causing issues with your computer's performance and security. It is essential to understand the nature of this threat and take immediate action to remove it and prevent further damage.

What Is PUP.HiDef Media Player?

PUP.HiDef Media Player is a type of potentially unwanted program that may have been installed on your system without your knowledge or consent. PUPs are software applications that may not be malicious in nature but can still cause problems with your computer's performance, stability, and security. They often come bundled with other software or are installed through deceptive means, such as fake downloads or misleading advertisements.

How PUP.HiDef Media Player Operates

PUPs like PUP.HiDef Media Player typically operate by installing themselves on your system and then modifying your computer's settings and configuration to suit their purposes. They may alter your browser's homepage, search engine, or other settings, and may also install additional software or plugins without your consent. In some cases, PUPs may also collect your personal data, such as browsing history or search queries, and transmit it to third-party servers for advertising or other purposes.

Symptoms of Infection

If your system is infected with PUP.HiDef Media Player, you may experience a range of symptoms, including slow system performance, frequent crashes or freezes, and unwanted advertisements or pop-ups. You may also notice that your browser's settings have been changed, or that new software or plugins have been installed without your consent. In some cases, you may also experience issues with your computer's security, such as vulnerabilities to other types of malware or viruses.

  • Unwanted changes to your browser's settings or configuration
  • Slow system performance or frequent crashes
  • Unwanted advertisements or pop-ups
  • New software or plugins installed without your consent
  • Security vulnerabilities or issues with your computer's security

How to Remove PUP.HiDef Media Player

  1. Boot your computer in Safe Mode with Networking to prevent the PUP from loading and to allow you to download and install removal tools
  2. Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system and detect and remove any malicious software or PUPs
  3. Uninstall any suspicious programs or software that you do not recognize or that you did not intentionally install
  4. Reset your browser's settings to their default values, including Chrome, Firefox, and Edge, to remove any changes made by the PUP
  5. Reboot your computer and perform a follow-up scan with your anti-malware tool to ensure that the PUP has been completely removed

Conclusion

Removing PUP.HiDef Media Player from your system requires careful attention to detail and a thorough understanding of the steps involved. By following the removal instructions outlined above, you can help to ensure that your system is free from this potentially unwanted program and that your computer's performance and security are protected. Remember to always be cautious when downloading and installing software, and to never install software from untrusted sources or without reading the terms and conditions carefully.

SpyHunter Detects & Remove PUP.HiDef Media Player

File System Details

PUP.HiDef Media Player may create the following file(s):
# File Name MD5 Detections
1. hidefmedia.exe.vir 839d47fd62ad760d3cefda7aa408c3f9 90,015

Registry Details

PUP.HiDef Media Player may create the following registry entry or registry entries:
File name without path
HiDef Media Player.lnk
SOFTWARE\Classes\.3g2\HiDefMedia.backup
SOFTWARE\Classes\.3gp2\HiDefMedia.backup
SOFTWARE\Classes\.3gp\HiDefMedia.backup
SOFTWARE\Classes\.3gpp\HiDefMedia.backup
SOFTWARE\Classes\.ADT\HiDefMedia.backup
SOFTWARE\Classes\.ADTS\HiDefMedia.backup
SOFTWARE\Classes\.aif\HiDefMedia.backup
SOFTWARE\Classes\.aifc\HiDefMedia.backup
SOFTWARE\Classes\.aiff\HiDefMedia.backup
SOFTWARE\Classes\.asf\HiDefMedia.backup
SOFTWARE\Classes\.asx\HiDefMedia.backup
SOFTWARE\Classes\.au\HiDefMedia.backup
SOFTWARE\Classes\.avi\HiDefMedia.backup
SOFTWARE\Classes\.cda\HiDefMedia.backup
SOFTWARE\Classes\.m1v\HiDefMedia.backup
SOFTWARE\Classes\.M2T\HiDefMedia.backup
SOFTWARE\Classes\.M2TS\HiDefMedia.backup
SOFTWARE\Classes\.M2V\HiDefMedia.backup
SOFTWARE\Classes\.m3u\HiDefMedia.backup
SOFTWARE\Classes\.m4a\HiDefMedia.backup
SOFTWARE\Classes\.m4v\HiDefMedia.backup
SOFTWARE\Classes\.mid\HiDefMedia.backup
SOFTWARE\Classes\.MOD\HiDefMedia.backup
SOFTWARE\Classes\.mov\HiDefMedia.backup
SOFTWARE\Classes\.mp2\HiDefMedia.backup
SOFTWARE\Classes\.mp2v\HiDefMedia.backup
SOFTWARE\Classes\.mp3\HiDefMedia.backup
SOFTWARE\Classes\.mp4\HiDefMedia.backup
SOFTWARE\Classes\.mp4v\HiDefMedia.backup
SOFTWARE\Classes\.mpa\HiDefMedia.backup
SOFTWARE\Classes\.mpe\HiDefMedia.backup
SOFTWARE\Classes\.mpeg\HiDefMedia.backup
SOFTWARE\Classes\.mpg\HiDefMedia.backup
SOFTWARE\Classes\.mpv2\HiDefMedia.backup
SOFTWARE\Classes\.MTS\HiDefMedia.backup
SOFTWARE\Classes\.rmi\HiDefMedia.backup
SOFTWARE\Classes\.snd\HiDefMedia.backup
SOFTWARE\Classes\.TS\HiDefMedia.backup
SOFTWARE\Classes\.TTS\HiDefMedia.backup
SOFTWARE\Classes\.wav\HiDefMedia.backup
SOFTWARE\Classes\.wma\HiDefMedia.backup
SOFTWARE\Classes\.wmv\HiDefMedia.backup
SOFTWARE\Classes\Applications\HiDefMedia.exe
SOFTWARE\Classes\AudioCD\shell\PlayWithHiDefMedia
SOFTWARE\Classes\Directory\shell\AddToPlaylistHiDefMedia
SOFTWARE\Classes\Directory\shell\PlayWithHiDefMedia
SOFTWARE\Classes\DVD\shell\PlayWithHiDefMedia
SOFTWARE\Classes\HiDefMedia.OPENFolder
SOFTWARE\Clients\Media\HiDefMedia
SOFTWARE\HiDefMedia
SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\AutoplayHandlers\Handlers\HiDefMediaPlayCDAudioOnArrival
SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\AutoplayHandlers\Handlers\HiDefMediaPlayDVDAudioOnArrival
SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\AutoplayHandlers\Handlers\HiDefMediaPlayDVDMovieOnArrival
SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\AutoplayHandlers\Handlers\HiDefMediaPlayMusicFilesOnArrival
SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\AutoplayHandlers\Handlers\HiDefMediaPlaySVCDMovieOnArrival
SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\AutoplayHandlers\Handlers\HiDefMediaPlayVCDMovieOnArrival
SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\AutoplayHandlers\Handlers\HiDefMediaPlayVideoFilesOnArrival
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.3g2\OpenWithProgids\HiDefMedia.3g2
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.3gp2\OpenWithProgids\HiDefMedia.3gp2
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.3gp\OpenWithProgids\HiDefMedia.3gp
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.3gpp\OpenWithProgids\HiDefMedia.3gpp
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.AAC\OpenWithProgids\HiDefMedia.aac
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.ADT\OpenWithProgids\HiDefMedia.adt
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.ADTS\OpenWithProgids\HiDefMedia.adts
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.aif\OpenWithProgids\HiDefMedia.aif
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.aifc\OpenWithProgids\HiDefMedia.aifc
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.aiff\OpenWithProgids\HiDefMedia.aiff
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.asf\OpenWithProgids\HiDefMedia.asf
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.asx\OpenWithProgids\HiDefMedia.asx
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.au\OpenWithProgids\HiDefMedia.au
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.avi\OpenWithProgids\HiDefMedia.avi
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.m1v\OpenWithProgids\HiDefMedia.m1v
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.M2T\OpenWithProgids\HiDefMedia.m2t
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.M2TS\OpenWithProgids\HiDefMedia.m2ts
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.M2V\OpenWithProgids\HiDefMedia.m2v
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.m3u\OpenWithProgids\HiDefMedia.m3u
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.m4a\OpenWithProgids\HiDefMedia.m4a
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.m4p\OpenWithProgids\HiDefMedia.m4p
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.m4v\OpenWithProgids\HiDefMedia.m4v
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mid\OpenWithProgids\HiDefMedia.mid
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.MOD\OpenWithProgids\HiDefMedia.mod
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mov\OpenWithProgids\HiDefMedia.mov
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mp2\OpenWithProgids\HiDefMedia.mp2
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mp2v\OpenWithProgids\HiDefMedia.mp2v
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mp3\OpenWithProgids\HiDefMedia.mp3
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mp4\OpenWithProgids\HiDefMedia.mp4
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mp4v\OpenWithProgids\HiDefMedia.mp4v
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mpa\OpenWithProgids\HiDefMedia.mpa
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mpe\OpenWithProgids\HiDefMedia.mpe
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mpeg\OpenWithProgids\HiDefMedia.mpeg
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mpg\OpenWithProgids\HiDefMedia.mpg
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mpv2\OpenWithProgids\HiDefMedia.mpv2
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.MTS\OpenWithProgids\HiDefMedia.mts
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.rmi\OpenWithProgids\HiDefMedia.rmi
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.vob\OpenWithProgids\HiDefMedia.vob
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.wav\OpenWithProgids\HiDefMedia.wav
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.wma\OpenWithProgids\HiDefMedia.wma
Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.wmv\OpenWithProgids\HiDefMedia.wmv
SOFTWARE\RegisteredApplications\HiDefMedia
SOFTWARE\Wow6432Node\Clients\Media\HiDefMedia
SOFTWARE\Wow6432Node\HiDefMedia
SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\AutoplayHandlers\Handlers\HiDefMediaPlayCDAudioOnArrival
SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\AutoplayHandlers\Handlers\HiDefMediaPlayDVDAudioOnArrival
SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\AutoplayHandlers\Handlers\HiDefMediaPlayDVDMovieOnArrival
SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\AutoplayHandlers\Handlers\HiDefMediaPlayMusicFilesOnArrival
SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\AutoplayHandlers\Handlers\HiDefMediaPlaySVCDMovieOnArrival
SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\AutoplayHandlers\Handlers\HiDefMediaPlayVCDMovieOnArrival
SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\AutoplayHandlers\Handlers\HiDefMediaPlayVideoFilesOnArrival
SOFTWARE\Wow6432Node\RegisteredApplications\HiDefMedia

Directories

PUP.HiDef Media Player may create the following directory or directories:

%ALLUSERSPROFILE%\Microsoft\Windows\Start Menu\Programs\HiDefMedia
%PROGRAMFILES%\HiDefMedia
%PROGRAMFILES(x86)%\HiDefMedia