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What is Webwow?

The Malwarebytes research team has determined that Webwow 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 the tab you searched in and opens a new tab using your search term in their own engine.

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

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

main.png

You may have noticed these warnings during install:

warning0.png

warning1.png

warning2.png

How did Webwow get on my computer?

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

webstore.png

after a redirect from their website:

website.png

How do I remove Webwow?

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 Webwow?

  • No, Malwarebytes removes Webwow 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 Webwow hijacker. It would have blocked their website, giving you a chance to stop it before it became too late.


 

protection1.png

 

protection2.png

 

Technical details for experts

Possible signs in FRST logs:


 

CHR Extension: (Webwow) - C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\fmhmdgnfdfaomibeoccanephagmandgp [2020-12-21]

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\fmhmdgnfdfaomibeoccanephagmandgp\6.3.55_0
       Adds the file manifest.json"="12/21/2020 8:46 AM, 1117 bytes, A
       Adds the file sr.js"="11/14/2020 5:03 PM, 7675 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\fmhmdgnfdfaomibeoccanephagmandgp\6.3.55_0\_metadata
       Adds the file computed_hashes.json"="12/21/2020 8:46 AM, 396 bytes, A
       Adds the file verified_contents.json"="11/14/2020 5:03 PM, 1639 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\fmhmdgnfdfaomibeoccanephagmandgp\6.3.55_0\icons
       Adds the file icon128.png"="12/21/2020 8:46 AM, 2188 bytes, A
       Adds the file icon48.png"="12/21/2020 8:46 AM, 253 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\fmhmdgnfdfaomibeoccanephagmandgp
       Adds the file 000003.log"="12/21/2020 8:46 AM, 0 bytes, A
       Adds the file CURRENT"="12/21/2020 8:46 AM, 16 bytes, A
       Adds the file LOCK"="12/21/2020 8:46 AM, 0 bytes, A
       Adds the file LOG"="12/21/2020 8:46 AM, 0 bytes, A
       Adds the file MANIFEST-000001"="12/21/2020 8:46 AM, 41 bytes, A

Registry details [View: All details] (Selection)
------------------------------------------------
    [HKEY_CURRENT_USER\Software\Google\Chrome\PreferenceMACs\Default\extensions.settings]
       "fmhmdgnfdfaomibeoccanephagmandgp"="REG_SZ", "BD83BE99E57D81DD5D2FB2173CBD75C6FC858BB86D0F27EF5297696AF3811C18"

Malwarebytes log:
 

Malwarebytes
www.malwarebytes.com

-Log Details-
Scan Date: 12/21/20
Scan Time: 8:53 AM
Log File: 9cf40028-4361-11eb-9763-080027235d76.json

-Software Information-
Version: 4.3.0.98
Components Version: 1.0.1130
Update Package Version: 1.0.34565
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: 232491
Threats Detected: 11
Threats Quarantined: 11
Time Elapsed: 4 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
PUP.Optional.QuickGoSearch, HKCU\SOFTWARE\GOOGLE\CHROME\PREFERENCEMACS\Default\extensions.settings|fmhmdgnfdfaomibeoccanephagmandgp, Quarantined, 12984, 663238, , , , , , 

Registry Data: 0
(No malicious items detected)

Data Stream: 0
(No malicious items detected)

Folder: 2
PUP.Optional.QuickGoSearch, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Sync Extension Settings\fmhmdgnfdfaomibeoccanephagmandgp, Quarantined, 12984, 663238, , , , , , 
PUP.Optional.QuickGoSearch, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\DEFAULT\EXTENSIONS\FMHMDGNFDFAOMIBEOCCANEPHAGMANDGP, Quarantined, 12984, 663238, 1.0.34565, , ame, , , 

File: 8
PUP.Optional.QuickGoSearch, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Secure Preferences, Replaced, 12984, 663238, , , , , 23B09C77AC475B19CE660523DEB6E4C1, 1AF4E7BDD6DE4934875400A384281AD0EBAA83D4E09E5FD662FED4DAA972A4E0
PUP.Optional.QuickGoSearch, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Preferences, Replaced, 12984, 663238, , , , , 06F5BEC2B393541CFFA733073554695B, 12E323D4ACAE095B460D30FC57732BB979BAB038F58057ED5E497C1E842C71BC
PUP.Optional.QuickGoSearch, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\fmhmdgnfdfaomibeoccanephagmandgp\000003.log, Quarantined, 12984, 663238, , , , , 3B525990507B1A0BC1CFDAD43A8FAE71, EF47367A9DBD08AA620B68467FCA1E1549142B5ACD3F18411A3B3FB11D27B152
PUP.Optional.QuickGoSearch, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\fmhmdgnfdfaomibeoccanephagmandgp\CURRENT, Quarantined, 12984, 663238, , , , , 46295CAC801E5D4857D09837238A6394, 0F1BAD70C7BD1E0A69562853EC529355462FCD0423263A3D39D6D0D70B780443
PUP.Optional.QuickGoSearch, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\fmhmdgnfdfaomibeoccanephagmandgp\LOCK, Quarantined, 12984, 663238, , , , , , 
PUP.Optional.QuickGoSearch, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\fmhmdgnfdfaomibeoccanephagmandgp\LOG, Quarantined, 12984, 663238, , , , , 33F9E38A49A34F511A34F658E53B76BF, 709EFF69AC208C5A0F64FE935BE535D56FCED23EEDAB5922C714B9E983C4A415
PUP.Optional.QuickGoSearch, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\fmhmdgnfdfaomibeoccanephagmandgp\MANIFEST-000001, Quarantined, 12984, 663238, , , , , 5AF87DFD673BA2115E2FCF5CFDB727AB, F9D31B278E215EB0D0E9CD709EDFA037E828F36214AB7906F612160FEAD4B2B4
PUP.Optional.QuickGoSearch, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\DEFAULT\EXTENSIONS\FMHMDGNFDFAOMIBEOCCANEPHAGMANDGP\6.3.55_0\MANIFEST.JSON, Quarantined, 12984, 663238, 1.0.34565, , ame, , 1329AA5596AA630167FD0AC8F153035A, 48E24B17DFC6FB0A1F0C28D2DADB81048D03C25784F4C1388C37CC6F77788F1A

Physical Sector: 0
(No malicious items detected)

WMI: 0
(No malicious items detected)


(end)

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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