PUA.Win32.YTDownloader.AO

March 24, 2020

PLATFORM:

Windows

OVERALL RISK RATING:

REPORTED INFECTION:

SYSTEM IMPACT RATING:

INFORMATION EXPOSURE:

Threat Type: Potentially Unwanted Application
Destructiveness: No
Encrypted:
In the wild: Yes

OVERVIEW

This Potentially Unwanted Application arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

TECHNICAL DETAILS

File Size: 10,363,864 bytes

File Type: EXE

Memory Resident: Yes

Initial Samples Received Date: 24 Mar 2020

Arrival Details

This Potentially Unwanted Application arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Potentially Unwanted Application adds the following processes:

"%Windows%\explorer.exe" "http://www.{BLOCKED}nloader.com/thankyou.html?{random characters}"
"%Windows%\explorer.exe" "%Program Files%\GreenTree Applications\YTD Video Downloader\ytd.exe"

It creates the following folders:

%Program Files%\GreenTree Applications\YTD Video Downloader\Lang
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_mixer
%All Users Profile%\Microsoft\Windows\Start Menu
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output
%Program Files%\GreenTree Applications
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins
%User Profile%\AppData
%Program Files%\GreenTree Applications\YTD Video Downloader
%All Users Profile%\Microsoft
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_filter
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_filter
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\codec
%All Users Profile%\Microsoft\Windows\Start Menu\Programs
%All Users Profile%\Microsoft\Windows\Start Menu\Programs\YTD Video Downloader
%System Root%\Users
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\access
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_output
%All Users Profile%\Microsoft\Windows

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).. %All Users Profile% is the common user's profile folder, which is usually C:\Documents and Settings\All Users on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit). . %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name} on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)

Other System Modifications

This Potentially Unwanted Application deletes the following folders:

%User Temp%\nstA0C3.tmp

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It adds the following registry entries:

HKEY_CURRENT_USER\Software\GreenTree Applications\
YTD
ISN = "AD7BB1D300554C8B8162FE5A5F172316"

HKEY_CURRENT_USER\Software\GreenTree Applications\
YTD
(Default) = "%Program Files%\GreenTree Applications\YTD Video Downloader"

HKEY_CURRENT_USER\Software\GreenTree Applications\
YTD
Language = "1033"

HKEY_CURRENT_USER\Software\GreenTree Applications\
YTD
kitType = "ytdd"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
DisplayIcon = "%Program Files%\GreenTree Applications\YTD Video Downloader\ytd.exe,0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
DisplayName = "YTD Video Downloader 5.9.15"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
UninstallString = "%Program Files%\GreenTree Applications\YTD Video Downloader\uninstall.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
Publisher = "GreenTree Applications SRL"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
URLInfoAbout = "http://www.{BLOCKED}nloader.com"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
NoModify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
NoRepair = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
InstallDir = "%Program Files%\GreenTree Applications\YTD Video Downloader"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
InstallLocation = "%Program Files%\GreenTree Applications\YTD Video Downloader"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
MainApp = "%Program Files%\GreenTree Applications\YTD Video Downloader\ytd.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
VersionMajor = "5"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
VersionMinor = "9"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
DisplayVersion = "5.9.15"

HKEY_LOCAL_MACHINE\SOFTWARE\{DAF8B7E5-449D-4180-8281-10E536E597F2}
(Default) = "5.9.15"

HKEY_LOCAL_MACHINE\SOFTWARE\{DAF8B7E5-449D-4180-8281-10E536E597F2}
it = "20191124051333"

Dropping Routine

This Potentially Unwanted Application drops the following files:

%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1061.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1025.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output\libwingdi_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\codec\libavcodec_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\COPYING.Apachev2
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_mixer\libinteger_mixer_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1044.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1035.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_filter\libswscale_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1033.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1030.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\ytd.exe
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\access\libfilesystem_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\scripts.yds
%Program Files%\GreenTree Applications\YTD Video Downloader\COPYING.LGPLv3
%Program Files%\GreenTree Applications\YTD Video Downloader\Uninstall.exe
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1045.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1055.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res2074.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\FFMPEG.EXE
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1040.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1031.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1032.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res9999.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1060.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\LICENSE
%All Users Profile%\Microsoft\Windows\Start Menu\Programs\YTD Video Downloader\Web site.url
%All Users Profile%\Microsoft\Windows\Start Menu\Programs\YTD Video Downloader\Uninstall.lnk
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res2052.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_output\libdirectsound_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1048.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output\libdirect3d_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\libvlc.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\libvlccore.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1038.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res2070.ini
%System Root%\Users\Public\Desktop\YTD Video Downloader.lnk
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1052.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1053.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_filter\libtrivial_channel_mixer_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1043.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1050.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\COPYING.LGPLv2
%Program Files%\GreenTree Applications\YTD Video Downloader\manual.bat
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1026.ini
%All Users Profile%\Microsoft\Windows\Start Menu\Programs\YTD Video Downloader\YTD Video Downloader.lnk
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1059.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_mixer\libfloat_mixer_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_filter\libaudio_format_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\librtmp.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1034.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1051.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_filter\libugly_resampler_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1049.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output\libdrawable_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output\libvmem_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1029.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1036.ini

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).. %All Users Profile% is the common user's profile folder, which is usually C:\Documents and Settings\All Users on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit). . %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)

Other Details

This Potentially Unwanted Application connects to the following possibly malicious URL:

http://www.{BLOCKED}nloader.com/images/pixel.gif?{random characters}
http://download.{BLOCKED}nloader.com/offers/offers.php?id=avast
http://www.{BLOCKED}nloader.com/thankyou.html?{random characters}
http://www.{BLOCKED}nloader.com/styles.css?202003201
http://www.{BLOCKED}nloader.com/ads/sah/win199.php?{random characters}
http://www.{BLOCKED}nloader.com/js/main.js
http://ajax.{BLOCKED}apis.com/ajax/libs/jquery/1.9.1/jquery.min.js
http://www.{BLOCKED}ridge.com/js/show_ads_supp.js?pubId=5742
http://www.{BLOCKED}-analytics.com/ga.js
http://www.{BLOCKED}ridge.com/ads-sync.js?{random characters}
http://www.{BLOCKED}nloader.com/images/sprite.png
http://www.{BLOCKED}ridge.com/no-impression.gif?{random characters}
http://www.{BLOCKED}nloader.com/favicon.ico
http://www.{BLOCKED}nloader.com/nag/sah/offer_sah199.php?{random characters}
http://www.{BLOCKED}nloader.com/ads/spacer.gif
http://ajax.{BLOCKED}apis.com/ajax/libs/jquery/1.3.2/jquery.min.js
http://www.{BLOCKED}-analytics.com/r/__utm.gif?{random characters}
http://www.{BLOCKED}nloader.com/nag/sah/sah199-bg-win.gif
http://www.{BLOCKED}nloader.com/nag/sah/sah-btn.png
http://www.{BLOCKED}-analytics.com/__utm.gif?{random characters}
http://go.{BLOCKED}oft.com
http://api.{BLOCKED}g.com
http://www.{BLOCKED}g.com
http://s7.{BLOCKED}s.com
http://www.{BLOCKED}tagmanager.com
http://connect.{BLOCKED}ok.net
http://z.{BLOCKED}s.com
http://v1.{BLOCKED}sedge.com
http://m.{BLOCKED}s.com
http://api-public.{BLOCKED}s.com
http://stats.{BLOCKED}g.doubleclick.net

This report is generated via an automated analysis system.

SOLUTION

Minimum Scan Engine: 9.850

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.

Step 2

Identify and terminate files detected as PUA.Win32.YTDownloader.AO

[ Learn More ]

Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 3

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

In HKEY_CURRENT_USER\Software\GreenTree Applications\YTD
- ISN = "AD7BB1D300554C8B8162FE5A5F172316"

In HKEY_CURRENT_USER\Software\GreenTree Applications\YTD
- (Default) = "%Program Files%\GreenTree Applications\YTD Video Downloader"

In HKEY_CURRENT_USER\Software\GreenTree Applications\YTD
- Language = "1033"

In HKEY_CURRENT_USER\Software\GreenTree Applications\YTD
- kitType = "ytdd"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- DisplayIcon = "%Program Files%\GreenTree Applications\YTD Video Downloader\ytd.exe,0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- DisplayName = "YTD Video Downloader 5.9.15"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- UninstallString = "%Program Files%\GreenTree Applications\YTD Video Downloader\uninstall.exe"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- Publisher = "GreenTree Applications SRL"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- URLInfoAbout = "http://www.{BLOCKED}nloader.com"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- NoModify = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- NoRepair = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- InstallDir = "%Program Files%\GreenTree Applications\YTD Video Downloader"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- InstallLocation = "%Program Files%\GreenTree Applications\YTD Video Downloader"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- MainApp = "%Program Files%\GreenTree Applications\YTD Video Downloader\ytd.exe"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- VersionMajor = "5"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- VersionMinor = "9"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- DisplayVersion = "5.9.15"

In HKEY_LOCAL_MACHINE\SOFTWARE\{DAF8B7E5-449D-4180-8281-10E536E597F2}
- (Default) = "5.9.15"

In HKEY_LOCAL_MACHINE\SOFTWARE\{DAF8B7E5-449D-4180-8281-10E536E597F2}
- it = "20191124051333"

To delete the registry value this malware/grayware created:

Open Registry Editor.
» For Windows 7 and Windows Server 2008 (R2) users, click the Start button, type regedit in the Search input field then press Enter.
» For Windows 8, Windows 8.1, Windows 10, and Windows Server 2012 (R2) users, right-click on the lower-left corner of the screen, click Run, type regedit in the text box provided, and then press Enter.
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>GreenTree Applications>YTD
In the right panel, locate and delete the entry:
ISN = "AD7BB1D300554C8B8162FE5A5F172316"
Again In the right panel, locate and delete the entry:
(Default) = "%Program Files%\GreenTree Applications\YTD Video Downloader"
Again In the right panel, locate and delete the entry:
Language = "1033"
Again In the right panel, locate and delete the entry:
kitType = "ytdd"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Uninstall>{{GUID}}
In the right panel, locate and delete the entry:
DisplayIcon = "%Program Files%\GreenTree Applications\YTD Video Downloader\ytd.exe,0"
Again In the right panel, locate and delete the entry:
DisplayName = "YTD Video Downloader 5.9.15"
Again In the right panel, locate and delete the entry:
UninstallString = "%Program Files%\GreenTree Applications\YTD Video Downloader\uninstall.exe"
Again In the right panel, locate and delete the entry:
Publisher = "GreenTree Applications SRL"
Again In the right panel, locate and delete the entry:
URLInfoAbout = "http://www.{BLOCKED}nloader.com"
Again In the right panel, locate and delete the entry:
NoModify = "1"
Again In the right panel, locate and delete the entry:
NoRepair = "1"
Again In the right panel, locate and delete the entry:
InstallDir = "%Program Files%\GreenTree Applications\YTD Video Downloader"
Again In the right panel, locate and delete the entry:
InstallLocation = "%Program Files%\GreenTree Applications\YTD Video Downloader"
Again In the right panel, locate and delete the entry:
MainApp = "%Program Files%\GreenTree Applications\YTD Video Downloader\ytd.exe"
Again In the right panel, locate and delete the entry:
VersionMajor = "5"
Again In the right panel, locate and delete the entry:
VersionMinor = "9"
Again In the right panel, locate and delete the entry:
DisplayVersion = "5.9.15"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>{DAF8B7E5-449D-4180-8281-10E536E597F2}
In the right panel, locate and delete the entry:
(Default) = "5.9.15"
Again In the right panel, locate and delete the entry:
it = "20191124051333"
Close Registry Editor.

Step 4

Search and delete these components

[ Learn More ]

There may be some components that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.

%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1061.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1025.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output\libwingdi_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\codec\libavcodec_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\COPYING.Apachev2
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_mixer\libinteger_mixer_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1044.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1035.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_filter\libswscale_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1033.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1030.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\ytd.exe
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\access\libfilesystem_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\scripts.yds
%Program Files%\GreenTree Applications\YTD Video Downloader\COPYING.LGPLv3
%Program Files%\GreenTree Applications\YTD Video Downloader\Uninstall.exe
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1045.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1055.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res2074.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\FFMPEG.EXE
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1040.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1031.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1032.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res9999.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1060.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\LICENSE
%All Users Profile%\Microsoft\Windows\Start Menu\Programs\YTD Video Downloader\Web site.url
%All Users Profile%\Microsoft\Windows\Start Menu\Programs\YTD Video Downloader\Uninstall.lnk
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res2052.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_output\libdirectsound_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1048.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output\libdirect3d_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\libvlc.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\libvlccore.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1038.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res2070.ini
%System Root%\Users\Public\Desktop\YTD Video Downloader.lnk
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1052.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1053.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_filter\libtrivial_channel_mixer_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1043.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1050.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\COPYING.LGPLv2
%Program Files%\GreenTree Applications\YTD Video Downloader\manual.bat
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1026.ini
%All Users Profile%\Microsoft\Windows\Start Menu\Programs\YTD Video Downloader\YTD Video Downloader.lnk
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1059.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_mixer\libfloat_mixer_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_filter\libaudio_format_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\librtmp.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1034.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1051.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_filter\libugly_resampler_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1049.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output\libdrawable_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output\libvmem_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1029.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1036.ini

To manually delete a malware/grayware file from an affected system:

•For Windows 7, Windows Server 2008 (R2), Windows 8, Windows 8.1, Windows 10, and Windows Server 2012 (R2):

Open a Windows Explorer window.
- For Windows 7 and Server 2008 (R2) users, click Start>Computer.
- For Windows 8, 8.1, 10, and Server 2012 (R2) users, right-click on the lower-left corner of the screen,then click File Explorer.
In the Search Computer/This PC input box, type:
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1061.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1025.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output\libwingdi_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\codec\libavcodec_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\COPYING.Apachev2
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_mixer\libinteger_mixer_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1044.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1035.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_filter\libswscale_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1033.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1030.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\ytd.exe
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\access\libfilesystem_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\scripts.yds
%Program Files%\GreenTree Applications\YTD Video Downloader\COPYING.LGPLv3
%Program Files%\GreenTree Applications\YTD Video Downloader\Uninstall.exe
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1045.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1055.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res2074.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\FFMPEG.EXE
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1040.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1031.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1032.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res9999.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1060.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\LICENSE
%All Users Profile%\Microsoft\Windows\Start Menu\Programs\YTD Video Downloader\Web site.url
%All Users Profile%\Microsoft\Windows\Start Menu\Programs\YTD Video Downloader\Uninstall.lnk
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res2052.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_output\libdirectsound_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1048.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output\libdirect3d_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\libvlc.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\libvlccore.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1038.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res2070.ini
%System Root%\Users\Public\Desktop\YTD Video Downloader.lnk
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1052.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1053.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_filter\libtrivial_channel_mixer_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1043.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1050.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\COPYING.LGPLv2
%Program Files%\GreenTree Applications\YTD Video Downloader\manual.bat
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1026.ini
%All Users Profile%\Microsoft\Windows\Start Menu\Programs\YTD Video Downloader\YTD Video Downloader.lnk
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1059.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_mixer\libfloat_mixer_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_filter\libaudio_format_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\librtmp.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1034.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1051.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_filter\libugly_resampler_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1049.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output\libdrawable_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output\libvmem_plugin.dll
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1029.ini
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1036.ini
Once located, select the file then press SHIFT+DELETE to delete it.
*Note: Read the following Microsoft page if these steps do not work on Windows 7 and Windows Server 2008 (R2).

Step 5

Search and delete these folders

[ Learn More ]

Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.

%Program Files%\GreenTree Applications\YTD Video Downloader\Lang
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_mixer
%All Users Profile%\Microsoft\Windows\Start Menu
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output
%Program Files%\GreenTree Applications
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins
%User Profile%\AppData
%Program Files%\GreenTree Applications\YTD Video Downloader
%All Users Profile%\Microsoft
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_filter
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_filter
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\codec
%All Users Profile%\Microsoft\Windows\Start Menu\Programs
%All Users Profile%\Microsoft\Windows\Start Menu\Programs\YTD Video Downloader
%System Root%\Users
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\access
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_output
%All Users Profile%\Microsoft\Windows

To delete malware/grayware/spyware folders:

For Windows 7, Windows Server 2008 (R2), Windows 8, Windows 8.1, Windows 10, and Windows Server 2012 (R2):

Open a Windows Explorer window.
- For Windows 7 and Server 2008 (R2) users, click Start>Computer.
- For Windows 8, 8.1, 10, and Server 2012 (R2) users, right-click on the lower-left corner of the screen,then click File Explorer.
In the Search Computer/This PC input box, type:
%Program Files%\GreenTree Applications\YTD Video Downloader\Lang
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_mixer
%All Users Profile%\Microsoft\Windows\Start Menu
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output
%Program Files%\GreenTree Applications
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins
%User Profile%\AppData
%Program Files%\GreenTree Applications\YTD Video Downloader
%All Users Profile%\Microsoft
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_filter
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_filter
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\codec
%All Users Profile%\Microsoft\Windows\Start Menu\Programs
%All Users Profile%\Microsoft\Windows\Start Menu\Programs\YTD Video Downloader
%System Root%\Users
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\access
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_output
%All Users Profile%\Microsoft\Windows
Once located, select the file then press SHIFT+DELETE to permanently delete the folder.
Repeat steps 2-3 for the remaining folders: %Program Files%\GreenTree Applications\YTD Video Downloader\Lang
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_mixer
%All Users Profile%\Microsoft\Windows\Start Menu
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output
%Program Files%\GreenTree Applications
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins
%User Profile%\AppData
%Program Files%\GreenTree Applications\YTD Video Downloader
%All Users Profile%\Microsoft
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_filter
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_filter
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\codec
%All Users Profile%\Microsoft\Windows\Start Menu\Programs
%All Users Profile%\Microsoft\Windows\Start Menu\Programs\YTD Video Downloader
%System Root%\Users
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\access
%Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_output
%All Users Profile%\Microsoft\Windows

*Note: Read the following Microsoft page if these steps do not work on Windows 7 and Server 2008 (R2).

Step 6

Scan your computer with your Trend Micro product to delete files detected as PUA.Win32.YTDownloader.AO. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check the following Trend Micro Support pages for more information:

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