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Removal instructions for JetMedia

- - - - - NativeDesktopMediaService

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Content is republished with permission from Malwarebytes.

What is JetMedia?

The Malwarebytes research team has determined that JetMedia is a potentially unwanted program that behaves like adware. Adware applications display advertisements not originating from the sites you are browsing.

How do I know if my computer is affected by JetMedia?

You may see this warning during install:


this task in your Scheduled Tasks:


this entry in your list of installed Programs and Features:


and this new service running in the background:


How did JetMedia get on my computer?

Adware applications use different methods for distributing themselves. This particular one was installed by a bundler.

How do I remove JetMedia?

Our program Malwarebytes can detect and remove this potentially unwanted program.
  • Please download Malwarebytes to your desktop.
  • Double-click mb3-setup-consumer-{version}.exe and follow the prompts to install the program.
  • Then click Finish.
  • Once the program has fully updated, select Scan Now on the Dashboard. Or select the Threat Scan from the Scan menu.
  • If another update of the definitions is available, it will be implemented before the rest of the scanning procedure.
  • When the scan is complete, make sure that all Threats are selected, and click Remove Selected.
  • Restart your computer when prompted to do so.
Is there anything else I need to do to get rid of JetMedia?
  • No, Malwarebytes removes JetMedia completely.
  • This PUP creates a scheduled task. You can read here how to check for and, if necessary, remove Scheduled Tasks.
How would the full version of Malwarebytes help protect me?

We hope our application and this guide have helped you eradicate this adware.

As you can see below the full version of Malwarebytes would have protected you against the JetMedia adware. It would have blocked the installer before it became too late.


Technical details for experts

Possible signs in FRST logs:
S2 NativeDesktopMediaService; C:\Program Files\Jetmedia\NativeDesktopMediaService\desktop_media_service.exe [798208 2018-06-05] () [File not signed]
C:\Program Files\Jetmedia

NativeDesktopMediaService (HKLM\...\{F8215F4A-4C7C-41A5-9DAB-78AFE769BB42}) (Version: 2.2.5 - Jetmedia)
Task: {01958EA3-6525-415C-9973-DD001445C31B} - System32\Tasks\Checker64 => C:\Program Files\Jetmedia\NativeDesktopMediaService\checker.exe [2018-04-30] ()
FirewallRules: [{905D3279-8055-4FCD-8CA1-193C7FCCDDA2}] => (Allow) C:\Program Files\Jetmedia\NativeDesktopMediaService\desktop_media_service.exe
Significant changes made by the installer:
File system details [View: All details] (Selection)
    Adds the folder C:\Program Files\Jetmedia\NativeDesktopMediaService
       Adds the file checker.exe"="4/30/2018 6:07 PM, 91648 bytes, A
       Adds the file desktop_media_service.exe"="6/5/2018 11:17 AM, 798208 bytes, A
    Adds the folder C:\ProgramData\JetMedia\NativeDesktopMediaService
       Adds the file comdata.dat"="5/10/2018 1:54 PM, 7307 bytes, A
    In the existing folder C:\Windows\System32\Tasks
       Adds the file Checker64"="7/23/2018 8:37 AM, 3498 bytes, A

Registry details [View: All details] (Selection)
    [HKEY_LOCAL_MACHINE\SOFTWARE\Caphyon\Advanced Installer\LZMA\{F8215F4A-4C7C-41A5-9DAB-78AFE769BB42}\2.2.5]
       "AI_ExePath"="REG_SZ", "C:\Users\{username}\AppData\Local\Temp\setup_2.2.5.exe"
       "AuthorizedCDFPrefix"="REG_SZ", ""
       "Comments"="REG_SZ", "This installer database contains the logic and data required to install NativeDesktopMediaService."
       "Contact"="REG_SZ", ""
       "DisplayName"="REG_SZ", "NativeDesktopMediaService"
       "DisplayVersion"="REG_SZ", "2.2.5"
       "EstimatedSize"="REG_DWORD", 860
       "HelpLink"="REG_SZ", ""
       "HelpTelephone"="REG_SZ", ""
       "InstallDate"="REG_SZ", "20180723"
       "InstallLocation"="REG_SZ", "C:\Program Files\Jetmedia\NativeDesktopMediaService\"
       "InstallSource"="REG_SZ", "C:\Users\{username}\AppData\Roaming\Jetmedia\NativeDesktopMediaService 2.2.5\install\769BB42\"
       "Language"="REG_DWORD", 1033
       "ModifyPath"="REG_EXPAND_SZ, "MsiExec.exe /X{F8215F4A-4C7C-41A5-9DAB-78AFE769BB42}"
       "NoModify"="REG_DWORD", 1
       "NoRepair"="REG_DWORD", 1
       "Publisher"="REG_SZ", "Jetmedia"
       "Readme"="REG_SZ", ""
       "Size"="REG_SZ", ""
       "UninstallString"="REG_EXPAND_SZ, "MsiExec.exe /X{F8215F4A-4C7C-41A5-9DAB-78AFE769BB42}"
       "URLInfoAbout"="REG_SZ", ""
       "URLUpdateInfo"="REG_SZ", ""
       "Version"="REG_DWORD", 33685509
       "VersionMajor"="REG_DWORD", 2
       "VersionMinor"="REG_DWORD", 2
       "WindowsInstaller"="REG_DWORD", 1
    [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Caphyon\Advanced Installer\Scheduled Tasks\{711E0759-3245-49C6-A4D0-B5EE99B2ECA2}]
       "Checker"="REG_DWORD", 1
       "Checker_ID"="REG_SZ", "Checker64"
       "InstanceId"="REG_SZ", "5c27beff-9835-42e9-bd21-9a91d5eafae1"
       "Path"="REG_SZ", "C:\Program Files\Jetmedia\NativeDesktopMediaService\"
       "RegisterDate"="REG_SZ", "1532327838"
       "ServiceName"="REG_SZ", "NativeDesktopMediaService"
       "Uninstall"="REG_SZ", "C:\Windows\SysWOW64\msiexec.exe /x {F8215F4A-4C7C-41A5-9DAB-78AFE769BB42}"
       "VendorId"="REG_SZ", "na"
       "Version"="REG_SZ", "2.2.5"
       "Description"="REG_SZ", "NativeDesktopMediaService Core Service"
       "DisplayName"="REG_SZ", "NativeDesktopMediaService"
       "ErrorControl"="REG_DWORD", 0
       "FailureActions"="REG_BINARY, ......................
       "FailureCommand"="REG_SZ", """"
       "ImagePath"="REG_EXPAND_SZ, ""C:\Program Files\Jetmedia\NativeDesktopMediaService\desktop_media_service.exe" --service"
       "ObjectName"="REG_SZ", "NT AUTHORITY\LocalService"
       "RebootMessage"="REG_SZ", "1:  "
       "Start"="REG_DWORD", 2
       "Type"="REG_DWORD", 16

Malwarebytes log:

-Log Details-
Scan Date: 7/23/18
Scan Time: 10:00 AM
Log File: 6e35d5cf-8e4e-11e8-86cd-00ffdcc6fdfc.json
Administrator: Yes

-Software Information-
Components Version: 1.0.374
Update Package Version: 1.0.6019
License: Premium

-System Information-
OS: Windows 7 Service Pack 1
CPU: x64
File System: NTFS
User: {computername}\{username}

-Scan Summary-
Scan Type: Threat Scan
Scan Initiated By: Manual
Result: Completed
Objects Scanned: 251248
Threats Detected: 14
Threats Quarantined: 14
Time Elapsed: 3 min, 33 sec

-Scan Options-
Memory: Enabled
Startup: Enabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Enabled
Heuristics: Enabled
PUP: Detect
PUM: Detect

-Scan Details-
Process: 1
PUP.Optional.JetMedia, C:\Program Files\Jetmedia\NativeDesktopMediaService\desktop_media_service.exe, Quarantined, [5319], [506353],1.0.6019

Module: 1
PUP.Optional.JetMedia, C:\Program Files\Jetmedia\NativeDesktopMediaService\desktop_media_service.exe, Quarantined, [5319], [506353],1.0.6019

Registry Key: 4
PUP.Optional.JetMedia, HKLM\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\SCHEDULE\TASKCACHE\TREE\Checker64, Quarantined, [5319], [506353],1.0.6019
PUP.Optional.JetMedia, HKLM\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\SCHEDULE\TASKCACHE\TASKS\{01958EA3-6525-415C-9973-DD001445C31B}, Quarantined, [5319], [506353],1.0.6019
PUP.Optional.JetMedia, HKLM\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\SCHEDULE\TASKCACHE\PLAIN\{01958EA3-6525-415C-9973-DD001445C31B}, Quarantined, [5319], [506353],1.0.6019
PUP.Optional.JetMedia, HKLM\SYSTEM\CURRENTCONTROLSET\SERVICES\NativeDesktopMediaService, Quarantined, [5319], [506353],1.0.6019

Registry Value: 3
PUP.Optional.JetMedia, HKLM\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\SCHEDULE\TASKCACHE\TASKS\{01958EA3-6525-415C-9973-DD001445C31B}|PATH, Quarantined, [5319], [506358],1.0.6019

Registry Data: 0
(No malicious items detected)

Data Stream: 0
(No malicious items detected)

Folder: 2
PUP.Optional.JetMedia, C:\Program Files\Jetmedia\NativeDesktopMediaService, Quarantined, [5319], [506353],1.0.6019
PUP.Optional.JetMedia, C:\PROGRAM FILES\JETMEDIA, Quarantined, [5319], [506353],1.0.6019

File: 3
PUP.Optional.JetMedia, C:\WINDOWS\SYSTEM32\TASKS\Checker64, Quarantined, [5319], [506353],1.0.6019
PUP.Optional.JetMedia, C:\PROGRAM FILES\JETMEDIA\NATIVEDESKTOPMEDIASERVICE\checker.exe, Quarantined, [5319], [506353],1.0.6019
PUP.Optional.JetMedia, C:\Program Files\Jetmedia\NativeDesktopMediaService\desktop_media_service.exe, Quarantined, [5319], [506353],1.0.6019

Physical Sector: 0
(No malicious items detected)

WMI: 0
(No malicious items detected)

As mentioned before the full version of Malwarebytes could have protected your computer against this threat.
We use different ways of protecting your computer(s):
  • Dynamically Blocks Malware Sites & Servers
  • Malware Execution Prevention
Save yourself the hassle and get protected.
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