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Removal instructions for DnsIo

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Metallica

Metallica

    Spyware Veteran

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Content is republished with permission from Malwarebytes.

What is DnsIo?

The Malwarebytes research team has determined that DnsIo is adware. These adware applications display advertisements not originating from the sites you are browsing.
This one is a DNS hijacker.

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

You may see this Scheduled Task:

warning3.png

and this warning during install:

main.png

How did DnsIo get on my computer?

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

How do I remove DnsIo?

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 DnsIo?
  • No, Malwarebytes' Anti-Malware removes DnsIo completely.
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 DnsIo adware. It would have warned you before the application could install itself, giving you a chance to stop it before it became too late.


protection1.png


Technical details for experts

You will see these signs in a HijackThis log:
O17 - HKLM\System\CCS\Services\Tcpip\..\{45B09BD0-96AE-417A-BE38-54811B4E2126}: NameServer = 208.87.151.25,208.87.151.24
O17 - HKLM\System\CS1\Services\Tcpip\..\{45B09BD0-96AE-417A-BE38-54811B4E2126}: NameServer = 208.87.151.25,208.87.151.24
You may see these signs in FRST logs:
 Tcpip\..\Interfaces\{45B09BD0-96AE-417A-BE38-54811B4E2126}: [NameServer] 208.87.151.25,208.87.151.24
 Tcpip\..\Interfaces\{45B09BD0-96AE-417A-BE38-54811B4E2126}: [DhcpNameServer] 192.168.2.254
 C:\Windows\System32\Tasks\DnsIo
 C:\Program Files (x86)\DnsIo

Task: {78EC7742-80A4-442F-9C5D-C85ECFC0B8A9} - System32\Tasks\DnsIo => C:\Program Files (x86)\DnsIo\DnsIo.exe
Alterations made by the installer:
File system details [View: All details] (Selection)
---------------------------------------------------
    Adds the folder C:\Program Files (x86)\DnsIo
    In the existing folder C:\Windows\System32\Tasks
       Adds the file DnsIo"="29/09/2015 09:05, 4724 bytes, A

Registry details [View: All details] (Selection)
------------------------------------------------
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{FCE1662E-06F1-413D-80CB-33D456D1CFCB}]
       "prod"="REG_SZ", "DnsIo"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\DnsIo]
       "cid"="REG_SZ", "1a79850a33bc499daf390869bce95cc4"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\DNSUtils]
       "{45B09BD0-96AE-417A-BE38-54811B4E2126}"="REG_SZ", ""
       "installCode"="REG_SZ", "61"
       "ti"="REG_SZ", "20150929"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\SmartDNS]
    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Tcpip\Parameters\Interfaces\{45B09BD0-96AE-417A-BE38-54811B4E2126}]
       "NameServer"=REG_SZ, "208.87.151.25,208.87.151.24"
Malwarebytes Anti-Malware log:
Malwarebytes Anti-Malware
www.malwarebytes.org

Scan Date: 29/09/2015
Scan Time: 09:20
Logfile: mbamDNSIO.txt
Administrator: Yes

Version: 2.1.8.1057
Malware Database: v2015.09.29.02
Rootkit Database: v2015.09.22.01
License: Premium
Malware Protection: Disabled
Malicious Website Protection: Enabled
Self-protection: Disabled

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

Scan Type: Threat Scan
Result: Completed
Objects Scanned: 334312
Time Elapsed: 4 min, 19 sec

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

Processes: 0
(No malicious items detected)

Modules: 0
(No malicious items detected)

Registry Keys: 4
PUP.Optional.WebWatcher, HKLM\SOFTWARE\WOW6432NODE\CLASSES\CLSID\{FCE1662E-06F1-413D-80CB-33D456D1CFCB}, Quarantined, [f8aed263bfcc40f6519632c1857d6e92], 
PUP.Optional.WebWatcher, HKLM\SOFTWARE\CLASSES\WOW6432NODE\CLSID\{FCE1662E-06F1-413D-80CB-33D456D1CFCB}, Quarantined, [f8aed263bfcc40f6519632c1857d6e92], 
PUP.Optional.CloudScout.BrwsrFlsh, HKLM\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\SCHEDULE\TASKCACHE\TREE\DnsIo, Delete-on-Reboot, [4c5a7abbff8cf83ea6ef2ab10ef6728e], 
Trojan.DNSio, HKLM\SOFTWARE\WOW6432NODE\DnsIo, Quarantined, [079f61d41f6c49ed89ec4199ec18e41c], 

Registry Values: 0
(No malicious items detected)

Registry Data: 1
Trojan.DNSChanger, HKLM\SYSTEM\CURRENTCONTROLSET\SERVICES\TCPIP\PARAMETERS\Interfaces\{45B09BD0-96AE-417A-BE38-54811B4E2126}|NameServer, 208.87.151.25,208.87.151.24, Good: (), Bad: (208.87.151.25,208.87.151.24),Replaced,[5056d95c612adb5bb1035f21ce37cf31]

Folders: 1
PUP.Optional.CloudScout.BrwsrFlsh, C:\Program Files (x86)\DnsIo, Quarantined, [05a16bcacac195a1c750d166fc07dd23], 

Files: 2
PUP.Optional.CloudScout, C:\Users\{username}\Desktop\dnsio-setup-dnsiosomo1.exe, Quarantined, [683e7fb6d9b24cea3ec2bdb549bcca36], 
PUP.Optional.CloudScout.BrwsrFlsh, C:\Windows\System32\Tasks\DnsIo, Quarantined, [c4e284b1791246f0fc976a7102020000], 

Physical Sectors: 0
(No malicious items detected)


(end)
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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