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What is ProSearchConverter?

The Malwarebytes research team has determined that ProSearchConverter 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 changes your default search engine and adds Search Recommendations.


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

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


and this changed setting:


You may have noticed these warnings during install:





How did ProSearchConverter 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 ProSearchConverter?

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 ProSearchConverter?

  • No, Malwarebytes removes ProSearchConverter 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 ProSearchConverter 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 DefaultSearchURL: Default -> hxxps://feed.prosearchconverter.com/?q={searchTerms}&publisher=prosearchconverter&barcodeid=585340000000000
CHR DefaultSearchKeyword: Default -> ProSearchConverter
CHR DefaultSuggestURL: Default -> hxxps://api.prosearchconverter.com/suggest/get?q={searchTerms}
CHR Extension: (ProSearchConverter) - C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\nhaioblphppdegabelgbcjkalefkpgeh [2021-01-18]

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\nhaioblphppdegabelgbcjkalefkpgeh\1.1.0_0
       Adds the file manifest.json"="1/18/2021 8:53 AM, 2156 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\nhaioblphppdegabelgbcjkalefkpgeh\1.1.0_0\_metadata
       Adds the file computed_hashes.json"="1/18/2021 8:53 AM, 6725 bytes, A
       Adds the file verified_contents.json"="10/20/2020 10:19 AM, 2049 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\nhaioblphppdegabelgbcjkalefkpgeh\1.1.0_0\images
       Adds the file logo-white-text.png"="10/20/2020 10:19 AM, 0 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\nhaioblphppdegabelgbcjkalefkpgeh\1.1.0_0\images\icons
       Adds the file 128x128.png"="1/18/2021 8:53 AM, 6113 bytes, A
       Adds the file 16x16.png"="1/18/2021 8:53 AM, 553 bytes, A
       Adds the file 64x64.png"="1/18/2021 8:53 AM, 2589 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\nhaioblphppdegabelgbcjkalefkpgeh\1.1.0_0\scripts
       Adds the file background.js"="10/20/2020 10:19 AM, 553493 bytes, A
       Adds the file sitecontent.js"="10/20/2020 10:19 AM, 77 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\nhaioblphppdegabelgbcjkalefkpgeh
       Adds the file 000003.log"="1/18/2021 8:56 AM, 507 bytes, A
       Adds the file CURRENT"="1/18/2021 8:53 AM, 16 bytes, A
       Adds the file LOCK"="1/18/2021 8:53 AM, 0 bytes, A
       Adds the file LOG"="1/18/2021 8:53 AM, 183 bytes, A
       Adds the file MANIFEST-000001"="1/18/2021 8:53 AM, 41 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Web Applications\_crx_nhaioblphppdegabelgbcjkalefkpgeh
       Adds the file ProSearchConverter.ico"="1/18/2021 8:53 AM, 185032 bytes, A
       Adds the file ProSearchConverter.ico.md5"="1/18/2021 8:53 AM, 16 bytes, A

Registry details [View: All details] (Selection)
       "nhaioblphppdegabelgbcjkalefkpgeh"="REG_SZ", "2BD81846D47ADD0A78C5C8CA6573E4E51AA9E8400FED0579F33731E4CEB08215"

Malwarebytes log:


-Log Details-
Scan Date: 1/18/21
Scan Time: 9:06 AM
Log File: 08026e82-5964-11eb-b467-080027235d76.json

-Software Information-
Components Version: 1.0.1130
Update Package Version: 1.0.35907
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: 232883
Threats Detected: 11
Threats Quarantined: 11
Time Elapsed: 3 min, 22 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
Adware.SearchEngineHijack.Generic, HKCU\SOFTWARE\GOOGLE\CHROME\PREFERENCEMACS\Default\extensions.settings|nhaioblphppdegabelgbcjkalefkpgeh, Quarantined, 15230, 799722, , , , , , 

Registry Data: 0
(No malicious items detected)

Data Stream: 0
(No malicious items detected)

Folder: 2
Adware.SearchEngineHijack.Generic, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Sync Extension Settings\nhaioblphppdegabelgbcjkalefkpgeh, Quarantined, 15230, 799722, , , , , , 
Adware.SearchEngineHijack.Generic, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\DEFAULT\EXTENSIONS\NHAIOBLPHPPDEGABELGBCJKALEFKPGEH, Quarantined, 15230, 799722, 1.0.35907, , ame, , , 

File: 8
Adware.SearchEngineHijack.Generic, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Secure Preferences, Replaced, 15230, 799722, , , , , F95F5CDB700DA65A31C8DE48FE8DD01F, F7F393F55BD10B925FFD2611B8AB9BF9D2AEE5719B66084655D3A27C73960A00
Adware.SearchEngineHijack.Generic, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Preferences, Replaced, 15230, 799722, , , , , 2B40D60770437AB0A4516F3B8F6E6220, 1C8D0B2700F2A19DFE43F3F78636EBA0C5FFAC73D1A7C9D796B9CD34063FAA16
Adware.SearchEngineHijack.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\nhaioblphppdegabelgbcjkalefkpgeh\000003.log, Quarantined, 15230, 799722, , , , , A4A73A6A46EC88F5167B228B424DF224, 293706A966B46376506DC1A4EF153C43D172A6BD2A5BC9D14E8CCF51CD9E1B39
Adware.SearchEngineHijack.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\nhaioblphppdegabelgbcjkalefkpgeh\CURRENT, Quarantined, 15230, 799722, , , , , 46295CAC801E5D4857D09837238A6394, 0F1BAD70C7BD1E0A69562853EC529355462FCD0423263A3D39D6D0D70B780443
Adware.SearchEngineHijack.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\nhaioblphppdegabelgbcjkalefkpgeh\LOCK, Quarantined, 15230, 799722, , , , , , 
Adware.SearchEngineHijack.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\nhaioblphppdegabelgbcjkalefkpgeh\LOG, Quarantined, 15230, 799722, , , , , 4DA97832FF335DBA3F4A8E55ABF1B253, 318DC6A7A893D06B8913171BB6F1F4F4C3B900D43A172FA67DB096452B3F0DF1
Adware.SearchEngineHijack.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\nhaioblphppdegabelgbcjkalefkpgeh\MANIFEST-000001, Quarantined, 15230, 799722, , , , , 5AF87DFD673BA2115E2FCF5CFDB727AB, F9D31B278E215EB0D0E9CD709EDFA037E828F36214AB7906F612160FEAD4B2B4
Adware.SearchEngineHijack.Generic, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\DEFAULT\EXTENSIONS\NHAIOBLPHPPDEGABELGBCJKALEFKPGEH\1.1.0_0\MANIFEST.JSON, Quarantined, 15230, 799722, 1.0.35907, , ame, , 2EA52B841C84590C1B0FF0BCD0092D65, 7216D6DBB709897193CBC8B7CE6E7DFF125767EBC05E7E54C38391A3D82BB685

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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