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Removal instructions for DNS Unlocker

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Content is republished with permission from Malwarebytes.

What is DNS Unlocker?

The Malwarebytes research team has determined that DNS Unlocker is adware. These adware applications display advertisements not originating from the sites you are browsing.

How do I know if my computer is affected by DNS Unlocker?

You may see this entry in your list of installed programs:


this Scheduled Task:


this warning during install:


and this type of advertisements (opening a new browser tab/window) :


How did DNS Unlocker get on my computer?

Adware applications use different methods for distributing themselves. This particular one was bundled with other software.

How do I remove DNS Unlocker?

Our program Malwarebytes Anti-Malware can detect and remove this potentially unwanted program.
  • Please download Malwarebytes Anti-Malware to your desktop.
  • Double-click mbam-setup-version.exe and follow the prompts to install the program.
  • At the end, be sure a check-mark is placed next to the following:
    • Enable free trial of Malwarebytes Anti-Malware Premium
    • Launch Malwarebytes Anti-Malware
  • Then click Finish.
  • If an update is found, you will be prompted to download and install the latest version.
  • Once the program has loaded, select Scan now. Or select the Threat Scan from the Scan menu.
  • When the scan is complete , make sure that everything is set to "Quarantine", and click Apply Actions.
  • Reboot your computer if prompted.
Is there anything else I need to do to get rid of DNS Unlocker?
  • No, Malwarebytes' Anti-Malware removes DNS Unlocker 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 Anti-Malware help protect me?

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

As you can see below the full version of Malwarebytes Anti-Malware would have protected you against the DNS Unlocker adware. It would have warned you before the application could install itself, giving you a chance to stop it before it became too late.


Technical details for experts

You will see these signs in a HijackThis log:
O17 - HKLM\System\CCS\Services\Tcpip\..\{B2AD56A0-C00C-497D-B00C-CDDE2602821F}: NameServer =,
O17 - HKLM\System\CCS\Services\Tcpip\..\{CEFD8B43-5DCF-4F4B-AB04-9CE5BC3390AE}: NameServer =,
O17 - HKLM\System\CCS\Services\Tcpip\..\{E71E7B0F-BEFA-44CD-A88B-486C243B4499}: NameServer =,
O17 - HKLM\System\CCS\Services\Tcpip\..\{F7303DDF-1D80-4E89-9EFA-E22263CF337E}: NameServer =,
You may see these signs in FRST logs:
 Tcpip\..\Interfaces\{B2AD56A0-C00C-497D-B00C-CDDE2602821F}: [NameServer],
 Tcpip\..\Interfaces\{CEFD8B43-5DCF-4F4B-AB04-9CE5BC3390AE}: [NameServer],
 Tcpip\..\Interfaces\{E71E7B0F-BEFA-44CD-A88B-486C243B4499}: [NameServer],
 Tcpip\..\Interfaces\{F7303DDF-1D80-4E89-9EFA-E22263CF337E}: [NameServer],
 C:\Program Files (x86)\DNS Unlocker

DNS Unlocker version 1.3 (HKLM-x32\...\{E1527582-8509-4011-B922-29E3FB548882}_is1) (Version: 1.3 - www.vidcreek.tv) <==== ATTENTION
Task: {814D918E-4A77-4C81-BF3E-8B689B7E55E8} - System32\Tasks\DNSPRESTONSBURG => C:\Program Files (x86)\DNS Unlocker\dnsprestonsburg.exe [2015-07-19] ()
Alterations made by the installer:
File system details [View: All details] (Selection)
    Adds the folder C:\Program Files (x86)\DNS Unlocker
       Adds the file CloudGuard.cer"="7/19/2015 7:44 AM, 1099 bytes, A
       Adds the file config.ini"="7/19/2015 7:44 AM, 496 bytes, A
       Adds the file ConsoleApplication1.dll"="7/19/2015 7:44 AM, 241664 bytes, A
       Adds the file dnsprestonsburg.exe"="7/19/2015 7:44 AM, 537088 bytes, A
       Adds the file Info.rtf"="7/19/2015 7:44 AM, 1610 bytes, A
       Adds the file License.rtf"="7/19/2015 7:44 AM, 22314 bytes, A
       Adds the file LogoBlack.ico"="7/19/2015 7:44 AM, 38059 bytes, A
       Adds the file LogoGreen.ico"="7/19/2015 7:44 AM, 57754 bytes, A
       Adds the file LogoYellow.ico"="7/19/2015 7:44 AM, 58346 bytes, A
       Adds the file Microsoft.Win32.TaskScheduler.dll"="7/19/2015 7:44 AM, 239616 bytes, A
       Adds the file settings.ini"="9/1/2015 10:05 AM, 73 bytes, A
       Adds the file unins000.dat"="9/1/2015 10:05 AM, 18388 bytes, A
       Adds the file unins000.exe"="9/1/2015 10:05 AM, 719711 bytes, A
       Adds the file ZonaTools.XPlorerBar.dll"="7/19/2015 7:44 AM, 67584 bytes, A
    In the existing folder C:\Windows\System32\Tasks
       Adds the file DNSPRESTONSBURG"="9/1/2015 10:05 AM, 26372 bytes, A

Registry details [View: All details] (Selection)
       "DP"="REG_SZ"", "44"
       "SDP1"="REG_SZ"", "00001"
       "SDP2"="REG_SZ"", "00001"
       "status"="REG_SZ"", "1"
       "UID"="REG_SZ"", "5e2557da87514a949d30e7001867cce9"
       "InstallPath"="REG_SZ"", "C:\Program Files (x86)\DNS Unlocker"
       "DisplayName"="REG_SZ"", "DNS Unlocker version 1.3"
       "DisplayVersion"="REG_SZ"", "1.3"
       "EstimatedSize"="REG_DWORD"", 2749
       "Inno Setup: App Path"="REG_SZ"", "C:\Program Files (x86)\DNS Unlocker"
       "Inno Setup: Icon Group"="REG_SZ"", "DNS Unlocker"
       "Inno Setup: Language"="REG_SZ"", "english"
       "Inno Setup: Setup Version"="REG_SZ"", "5.5.5 (a)"
       "Inno Setup: User"="REG_SZ"", "{username}"
       "InstallDate"="REG_SZ"", "20150901"
       "InstallLocation"="REG_SZ"", "C:\Program Files (x86)\DNS Unlocker\"
       "MajorVersion"="REG_DWORD"", 1
       "MinorVersion"="REG_DWORD"", 3
       "NoModify"="REG_DWORD"", 1
       "NoRepair"="REG_DWORD"", 1
       "Publisher"="REG_SZ"", "www.vidcreek.tv"
       "QuietUninstallString"="REG_SZ"", ""C:\Program Files (x86)\DNS Unlocker\unins000.exe" /SILENT"
       "UninstallString"="REG_SZ"", ""C:\Program Files (x86)\DNS Unlocker\unins000.exe""
Malwarebytes Anti-Malware log:
Malwarebytes Anti-Malware

Scan Date: 9/1/2015
Scan Time: 10:29 AM
Logfile: mbamDNSunlocker.txt
Administrator: Yes

Malware Database: v2015.09.01.01
Rootkit Database: v2015.08.16.01
License: Premium
Malware Protection: Disabled
Malicious Website Protection: Enabled
Self-protection: Disabled

OS: Windows 8.1
CPU: x64
File System: NTFS
User: {username}

Scan Type: Threat Scan
Result: Completed
Objects Scanned: 348000
Time Elapsed: 28 min, 45 sec

Memory: Enabled
Startup: Enabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Enabled
Heuristics: Enabled
PUP: Enabled
PUM: Enabled

Processes: 1
PUP.Optional.CloudGuard.BrwsrFlsh, C:\Program Files (x86)\DNS Unlocker\dnsprestonsburg.exe, 1964, Delete-on-Reboot, [eec7d2587615f244f4c5be0dac555ca4]

Modules: 0
(No malicious items detected)

Registry Keys: 2
PUP.Optional.DNSUnlocker.BrwsrFlsh, HKLM\SOFTWARE\WOW6432NODE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\{E1527582-8509-4011-B922-29E3FB548882}_is1, Quarantined, [4d689d8dbfccf541304041b41be739c7], 

Registry Values: 0
(No malicious items detected)

Registry Data: 4
Trojan.DNSChanger, HKLM\SYSTEM\CURRENTCONTROLSET\SERVICES\TCPIP\PARAMETERS\Interfaces\{B2AD56A0-C00C-497D-B00C-CDDE2602821F}|NameServer,,, Good: (), Bad: (,,Replaced,[0ca979b13c4fa492c6b6d58c6b9a8a76]
Trojan.DNSChanger, HKLM\SYSTEM\CURRENTCONTROLSET\SERVICES\TCPIP\PARAMETERS\Interfaces\{CEFD8B43-5DCF-4F4B-AB04-9CE5BC3390AE}|NameServer,,, Good: (), Bad: (,,Replaced,[1f9632f88407db5b9ae2cc95ff0617e9]
Trojan.DNSChanger, HKLM\SYSTEM\CURRENTCONTROLSET\SERVICES\TCPIP\PARAMETERS\Interfaces\{E71E7B0F-BEFA-44CD-A88B-486C243B4499}|NameServer,,, Good: (), Bad: (,,Replaced,[13a227036526bd791b615e03966ff30d]
Trojan.DNSChanger, HKLM\SYSTEM\CURRENTCONTROLSET\SERVICES\TCPIP\PARAMETERS\Interfaces\{F7303DDF-1D80-4E89-9EFA-E22263CF337E}|NameServer,,, Good: (), Bad: (,,Replaced,[e6cfc06ac8c3dd59186481e0679e59a7]

Folders: 1
PUP.Optional.DNSUnlocker.BrwsrFlsh, C:\Program Files (x86)\DNS Unlocker, Delete-on-Reboot, [4d689d8dbfccf541304041b41be739c7], 

Files: 16
PUP.Optional.CloudGuard.BrwsrFlsh, C:\Program Files (x86)\DNS Unlocker\dnsprestonsburg.exe, Delete-on-Reboot, [eec7d2587615f244f4c5be0dac555ca4], 
PUP.Optional.DNSUnlocker.BrwsrFlsh, C:\Users\{username}\Desktop\DNS Unlocker Setup  .exe, Quarantined, [4c692406612a320441c268f39d63a35d], 
PUP.Optional.DNSUnlocker, C:\Program Files (x86)\DNS Unlocker\ZonaTools.XPlorerBar.dll, Quarantined, [684d5dcd6b2092a4d6d33d90eb166d93], 
PUP.Optional.DNSUnblocker, C:\Windows\System32\Tasks\DNSPRESTONSBURG, Quarantined, [c0f552d843482511e8588a01ae56d030], 
PUP.Optional.DNSUnlocker.BrwsrFlsh, C:\Program Files (x86)\DNS Unlocker\CloudGuard.cer, Quarantined, [4d689d8dbfccf541304041b41be739c7], 
PUP.Optional.DNSUnlocker.BrwsrFlsh, C:\Program Files (x86)\DNS Unlocker\config.ini, Quarantined, [4d689d8dbfccf541304041b41be739c7], 
PUP.Optional.DNSUnlocker.BrwsrFlsh, C:\Program Files (x86)\DNS Unlocker\ConsoleApplication1.dll, Quarantined, [4d689d8dbfccf541304041b41be739c7], 
PUP.Optional.DNSUnlocker.BrwsrFlsh, C:\Program Files (x86)\DNS Unlocker\Info.rtf, Quarantined, [4d689d8dbfccf541304041b41be739c7], 
PUP.Optional.DNSUnlocker.BrwsrFlsh, C:\Program Files (x86)\DNS Unlocker\License.rtf, Quarantined, [4d689d8dbfccf541304041b41be739c7], 
PUP.Optional.DNSUnlocker.BrwsrFlsh, C:\Program Files (x86)\DNS Unlocker\LogoBlack.ico, Quarantined, [4d689d8dbfccf541304041b41be739c7], 
PUP.Optional.DNSUnlocker.BrwsrFlsh, C:\Program Files (x86)\DNS Unlocker\LogoGreen.ico, Quarantined, [4d689d8dbfccf541304041b41be739c7], 
PUP.Optional.DNSUnlocker.BrwsrFlsh, C:\Program Files (x86)\DNS Unlocker\LogoYellow.ico, Quarantined, [4d689d8dbfccf541304041b41be739c7], 
PUP.Optional.DNSUnlocker.BrwsrFlsh, C:\Program Files (x86)\DNS Unlocker\Microsoft.Win32.TaskScheduler.dll, Delete-on-Reboot, [4d689d8dbfccf541304041b41be739c7], 
PUP.Optional.DNSUnlocker.BrwsrFlsh, C:\Program Files (x86)\DNS Unlocker\settings.ini, Quarantined, [4d689d8dbfccf541304041b41be739c7], 
PUP.Optional.DNSUnlocker.BrwsrFlsh, C:\Program Files (x86)\DNS Unlocker\unins000.dat, Quarantined, [4d689d8dbfccf541304041b41be739c7], 
PUP.Optional.DNSUnlocker.BrwsrFlsh, C:\Program Files (x86)\DNS Unlocker\unins000.exe, Quarantined, [4d689d8dbfccf541304041b41be739c7], 

Physical Sectors: 0
(No malicious items detected)

As mentioned before the full version of Malwarebytes Anti-Malware 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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