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View Full Version : Manual Removal Guide for PU.NZellCodec



Friday
2016-09-20, 09:17
The following instructions have been created to help you to get rid of "PU.NZellCodec" manually.
Use this guide at your own risk; software should usually be better suited to remove malware, since it is able to look deeper.

If this guide was helpful to you, please consider donating towards this site (http://www.safer-networking.org/index.php?page=donate).

Threat Details:

Categories:
pups

Description:
PU.NZellCodec installs several video codecs and connects to korean adware servers in the background.
Removal Instructions:

Autorun:

Please use Spybot-S&D (http://www.safer-networking.org/index.php?page=spybotsd), RunAlyzer (http://www.safer-networking.org/index.php?page=runalyzer) or msconfig.exe to remove the following autorun entries.

Entries named "nzellwatch" and pointing to "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\NZellCodecUpdate.exe".

Important: There are more autorun entries that cannot be safely described in simple words. Please use Spybot-S&D (http://www.safer-networking.org/index.php?page=spybotsd) to remove them.

Installed Software List:

You can try to uninstall products with the names listed below; for items identified by other properties or to avoid malware getting active again on uninstallation, use Spybot-S&D (http://www.safer-networking.org/index.php?page=spybotsd) or RunAlyzer (http://www.safer-networking.org/index.php?page=runalyzer) to locate and get rid of these entries.

Products that have a key or property named "NzelCodecPack".
Products that have a key or property named "NZellCodecPack".

Files:

Please use Windows Explorer or another file manager of your choice to locate and delete these files.

The file at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\nzellcodec_uninstall.exe".
The file at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\NZellCodecUpdate.exe".
Make sure you set your file manager to display hidden and system files. If PU.NZellCodec uses rootkit technologies, use the rootkit scanner integrated into Spybot-S&D (http://www.safer-networking.org/index.php?page=spybotsd) 2.x or our Total Commander anti-rootkit plugins (http://forums.spybot.info/downloads.php?id=3).
You will have to use a global search for files without a name specified. Be extra careful, because just the name might not be enough to identify files!

Important: There are more files that cannot be safely described in simple words. Please use Spybot-S&D (http://www.safer-networking.org/index.php?page=spybotsd) to remove them.

Folders:

Please use Windows Explorer or another file manager of your choice to locate and delete these folders.

The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\audio\ac3 filter".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\audio\corevorbis".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\audio\lameDS".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\audio\mp4 splitter".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\audio\oggsplitter".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\audio\shoutcastsource".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\audio".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\caption".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\avi2ac3filter".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\avisplitter".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\cddareader".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\cdxareader".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\d2vsource".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\diracsplitter".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\divx3".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\divx5".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\dscaler".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\dsmmuxer".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\dsmsplitter".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\ffdshow\custom matrices".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\ffdshow\languages".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\ffdshow".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\flvsplitter".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\hallisplitter".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\matroskamuxer".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\matroskasplitter".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\mms".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\mpegsplitter".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\realmediasplitter".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\streamdrivethru".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\subtitlesource".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\vtsreader".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video\x264".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs\video".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\codecs".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\tools\asf2mkv".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\tools\divfix \docs".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\tools\divfix \locale\hu".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\tools\divfix \locale\tr".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\tools\divfix \locale".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\tools\divfix ".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\tools\gspot".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\tools\mpc".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack\tools".
The directory at "<$PROGRAMFILES>\nzellsoft\NzellCodecPack".
The directory at "<$PROGRAMFILES>\nzellsoft".
Make sure you set your file manager to display hidden and system files. If PU.NZellCodec uses rootkit technologies, use our RootAlyzer (http://forums.spybot.info/downloads.php?id=8) or our Total Commander anti-rootkit plugins (http://forums.spybot.info/downloads.php?id=3).
You will have to use a global search for files without a name specified. Be extra careful, because just the name might not be enough to identify folders!

Registry:

You can use regedit.exe (included in Windows) to locate and delete these registry entries.

Delete the registry key "NZellCodecPack" at "HKEY_LOCAL_MACHINE\SOFTWARE\".
If PU.NZellCodec uses rootkit technologies, use our RegAlyzer (http://www.safer-networking.org/index.php?page=regalyzer), RootAlyzer (http://forums.spybot.info/downloads.php?id=8) or our Total Commander anti-rootkit plugins (http://forums.spybot.info/downloads.php?id=3).

Final Words:

If neither Spybot-S&D nor self help did resolve the issue or you would prefer one on one help,
Please read these instructions (http://forums.spybot.info/showthread.php?t=288) before requesting assistance,
Then start your own thread in the Malware Removal Forum (http://forums.spybot.info/forumdisplay.php?f=22) where a volunteer analyst will advise you as soon as available.