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What is nok app?

The Malwarebytes research team has determined that nok app is a search hijacker. These so-called "hijackers" manipulate your browser(s), for example to change your startpage or searchscopes, so that the affected browser visits their site or one of their choice.
This particular one closes your search tab and opens a new one with their own search engine.


How do I know if my computer is affected by nok app?

You may see this entry in your list of installed Chrome extensions:


You may have noticed these warnings during install:




How did nok app get on my computer?

Browser hijackers use different methods for distributing themselves. This particular one was downloaded from the webstore:


after a redirect from their website:


How do I remove nok app?

Our program Malwarebytes can detect and remove this search hijacker.

  • Please download Malwarebytes for Windows to your desktop.
  • Double-click MBSetup.exe and follow the prompts to install the program.
  • When your Malwarebytes for Windows installation completes, the program opens to the Welcome to Malwarebytes screen.
  • Click on the Get started button.
  • Click Scan to start a Threat Scan.
  • When the scan is finished click Quarantine to remove the found threats.
  • Reboot the system if prompted to complete the removal process.

Is there anything else I need to do to get rid of nok app?

  • No, Malwarebytes removes nok app completely.

How would the full version of Malwarebytes help protect me?

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

As you can see below Malwarebytes Browser Guard, and the full version of Malwarebytes would have protected you against the nok app hijacker. It would have blocked their website, giving you a chance to stop it before it became too late.




Technical details for experts

Possible signs in FRST logs:


CHR Extension: (nok app) - C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\igbjecfohkegdmjapeikagjnamfnkobn [2021-03-19]

Alterations made by the installer:

File system details [View: All details] (Selection)
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\igbjecfohkegdmjapeikagjnamfnkobn\6.4.11_0
       Adds the file manifest.json"="3/19/2021 10:24 AM, 1113 bytes, A
       Adds the file sr.js"="2/21/2021 11:32 AM, 7540 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\igbjecfohkegdmjapeikagjnamfnkobn\6.4.11_0\_metadata
       Adds the file computed_hashes.json"="3/19/2021 10:24 AM, 396 bytes, A
       Adds the file verified_contents.json"="2/21/2021 11:31 AM, 1639 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\igbjecfohkegdmjapeikagjnamfnkobn\6.4.11_0\icons
       Adds the file icon128.png"="3/19/2021 10:24 AM, 2188 bytes, A
       Adds the file icon48.png"="3/19/2021 10:24 AM, 253 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\igbjecfohkegdmjapeikagjnamfnkobn
       Adds the file 000003.log"="3/19/2021 10:25 AM, 224 bytes, A
       Adds the file CURRENT"="3/19/2021 10:24 AM, 16 bytes, A
       Adds the file LOCK"="3/19/2021 10:24 AM, 0 bytes, A
       Adds the file LOG"="3/19/2021 10:24 AM, 183 bytes, A
       Adds the file MANIFEST-000001"="3/19/2021 10:24 AM, 41 bytes, A

Registry details [View: All details] (Selection)
       "igbjecfohkegdmjapeikagjnamfnkobn"="REG_SZ", "069022FAAEAF4683A85C90B97D929AC12935860A611C941DFBCDF1E3FEF6631D"

Malwarebytes log:


-Log Details-
Scan Date: 3/19/21
Scan Time: 10:30 AM
Log File: ce2f2b62-8895-11eb-94e6-080027235d76.json

-Software Information-
Components Version: 1.0.1217
Update Package Version: 1.0.38375
License: Premium

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

-Scan Summary-
Scan Type: Threat Scan
Scan Initiated By: Manual
Result: Completed
Objects Scanned: 233495
Threats Detected: 11
Threats Quarantined: 11
Time Elapsed: 1 min, 42 sec

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

-Scan Details-
Process: 0
(No malicious items detected)

Module: 0
(No malicious items detected)

Registry Key: 0
(No malicious items detected)

Registry Value: 1
PUP.Optional.SearchEngineHijack.Generic, HKCU\SOFTWARE\GOOGLE\CHROME\PREFERENCEMACS\Default\extensions.settings|igbjecfohkegdmjapeikagjnamfnkobn, Quarantined, 16197, 836150, , , , , , 

Registry Data: 0
(No malicious items detected)

Data Stream: 0
(No malicious items detected)

Folder: 2
PUP.Optional.SearchEngineHijack.Generic, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Sync Extension Settings\igbjecfohkegdmjapeikagjnamfnkobn, Quarantined, 16197, 836150, , , , , , 
PUP.Optional.SearchEngineHijack.Generic, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\DEFAULT\EXTENSIONS\IGBJECFOHKEGDMJAPEIKAGJNAMFNKOBN, Quarantined, 16197, 836150, 1.0.38375, , ame, , , 

File: 8
PUP.Optional.SearchEngineHijack.Generic, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Secure Preferences, Replaced, 16197, 836150, , , , , 8A6CEF55A366C1BA63C5886CDB36A4B4, E9431AF4EDE62539F5556D8B5996568777B337E4D031E1770A70F75C6C8444F0
PUP.Optional.SearchEngineHijack.Generic, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Preferences, Replaced, 16197, 836150, , , , , 75E3724D5A757FBDE52572E020D75C15, 2AB87DFB473F34D1743B94C0E865EFAD52BDD0AB21FE303DCBF3A559582D3FA0
PUP.Optional.SearchEngineHijack.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\igbjecfohkegdmjapeikagjnamfnkobn\000003.log, Quarantined, 16197, 836150, , , , , FE67FA02D608B7EF7634AA00C0A95EF3, C6360004CBB78C773A015C6279B5FC6C94099E2B6E782F6C101FACB01CFED4EF
PUP.Optional.SearchEngineHijack.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\igbjecfohkegdmjapeikagjnamfnkobn\CURRENT, Quarantined, 16197, 836150, , , , , 46295CAC801E5D4857D09837238A6394, 0F1BAD70C7BD1E0A69562853EC529355462FCD0423263A3D39D6D0D70B780443
PUP.Optional.SearchEngineHijack.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\igbjecfohkegdmjapeikagjnamfnkobn\LOCK, Quarantined, 16197, 836150, , , , , , 
PUP.Optional.SearchEngineHijack.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\igbjecfohkegdmjapeikagjnamfnkobn\LOG, Quarantined, 16197, 836150, , , , , E156FEA19E33C5D942B732CFBDB0B204, 80A8103FF0E7002BB82797DCAF3A58AE0CAFAC60574FF3F752EE13D6B3AAEF59
PUP.Optional.SearchEngineHijack.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\igbjecfohkegdmjapeikagjnamfnkobn\MANIFEST-000001, Quarantined, 16197, 836150, , , , , 5AF87DFD673BA2115E2FCF5CFDB727AB, F9D31B278E215EB0D0E9CD709EDFA037E828F36214AB7906F612160FEAD4B2B4
PUP.Optional.SearchEngineHijack.Generic, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\DEFAULT\EXTENSIONS\IGBJECFOHKEGDMJAPEIKAGJNAMFNKOBN\6.4.11_0\MANIFEST.JSON, Quarantined, 16197, 836150, 1.0.38375, , ame, , EC721CD7258A7CE8923245A85592B404, 6C76365CFFF723E0955B120CD3270B32240FA9738A7A8E2AC84051CF7BB8D036

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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