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Removal instructions for Maxi Buy

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#1
Metallica

Metallica

    Spyware Veteran

  • GeekU Moderator
  • 32,355 posts
Content is republished with permission from Malwarebytes.

What is Maxi Buy?

The Malwarebytes research team has determined that Maxi Buy is a browser 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 one also displays advertisements.

How do I know if my computer is affected by Maxi Buy?

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

main.png

and these warnings during install:

warning1.png

warning2.png

this icon in your Chrome menu-bar:

icons.png

How did Maxi Buy get on my computer?

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

webstore.png

and promoted on several domains:

website.png

How do I remove Maxi Buy?

Our program Malwarebytes can detect and remove this potentially unwanted program.
  • Please download Malwarebytes to your desktop.
  • Double-click mb3-setup-consumer-{version}.exe and follow the prompts to install the program.
  • Then click Finish.
  • Once the program has fully updated, select Scan Now on the Dashboard. Or select the Threat Scan from the Scan menu.
  • If another update of the definitions is available, it will be implemented before the rest of the scanning procedure.
  • When the scan is complete, make sure that all Threats are selected, and click Remove Selected.
  • Restart your computer when prompted to do so.
Is there anything else I need to do to get rid of Maxi Buy?
  • No, Malwarebytes removes Maxi Buy completely.
  • This PUP creates some scheduled tasks. You can read here how to check for and, if necessary, remove Scheduled Tasks.
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 the full version of Malwarebytes would have protected you against the Maxi Buy hijacker. It would have blocked the domains promoting the extension, giving you a chance to stop it before it became too late.

protection2.png


Technical details for experts

Possible signs in FRST logs:

CHR Extension: (Maxi Buy) - C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna [2018-09-07]
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\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0
       Adds the file 112.png"="9/7/2018 9:01 AM, 3363 bytes, A
       Adds the file 128.png"="9/7/2018 9:01 AM, 3881 bytes, A
       Adds the file 16.png"="9/7/2018 9:01 AM, 576 bytes, A
       Adds the file 24.png"="9/7/2018 9:01 AM, 888 bytes, A
       Adds the file 32.png"="9/7/2018 9:01 AM, 904 bytes, A
       Adds the file 48.png"="9/7/2018 9:01 AM, 1392 bytes, A
       Adds the file 64.png"="9/7/2018 9:01 AM, 1877 bytes, A
       Adds the file 80.png"="9/7/2018 9:01 AM, 2353 bytes, A
       Adds the file 96.png"="9/7/2018 9:01 AM, 2866 bytes, A
       Adds the file manifest.json"="9/7/2018 9:01 AM, 1392 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\_locales
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\_locales\en
       Adds the file messages.json"="9/7/2018 9:01 AM, 373 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\_metadata
       Adds the file computed_hashes.json"="9/7/2018 9:01 AM, 5060 bytes, A
       Adds the file verified_contents.json"="12/14/2017 4:56 PM, 2947 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\js
       Adds the file background.js"="12/14/2017 4:56 PM, 38393 bytes, A
       Adds the file browser-polyfill.js"="12/14/2017 4:56 PM, 26489 bytes, A
       Adds the file content.js"="12/14/2017 4:56 PM, 238751 bytes, A
       Adds the file jquery.easing.1.3.js"="12/14/2017 4:56 PM, 8101 bytes, A
       Adds the file jquery-3.2.1.min.js"="12/14/2017 4:56 PM, 86659 bytes, A

Registry details [View: All details] (Selection)
------------------------------------------------
    [HKEY_CURRENT_USER\Software\Google\Chrome\PreferenceMACs\Default\extensions.settings]
       "glfmbnjhfdnblpgihgcflmnjbpoaegna"="REG_SZ", "92DE80AAF419DFD435DE97544DA884DF66F4AA7CCD0111A8CB46FC2F62210DCB"
Malwarebytes log:

Malwarebytes
www.malwarebytes.com

-Log Details-
Scan Date: 9/10/18
Scan Time: 9:01 AM
Log File: 4cd0f00e-b4c7-11e8-a531-00ffdcc6fdfc.json
Administrator: Yes

-Software Information-
Version: 3.5.1.2522
Components Version: 1.0.391
Update Package Version: 1.0.6747
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: 252106
Threats Detected: 26
Threats Quarantined: 26
Time Elapsed: 3 min, 27 sec

-Scan Options-
Memory: Enabled
Startup: Enabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Enabled
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: 0
(No malicious items detected)

Registry Data: 0
(No malicious items detected)

Data Stream: 0
(No malicious items detected)

Folder: 6
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\_locales\en, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\_metadata, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\_locales, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\js, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\EXTENSIONS\glfmbnjhfdnblpgihgcflmnjbpoaegna, Delete-on-Reboot, [2148], [563019],1.0.6747

File: 20
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\js\background.js, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\js\browser-polyfill.js, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\js\content.js, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\js\jquery-3.2.1.min.js, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\js\jquery.easing.1.3.js, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\_locales\en\messages.json, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\_metadata\computed_hashes.json, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\_metadata\verified_contents.json, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\112.png, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\128.png, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\16.png, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\24.png, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\32.png, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\48.png, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\64.png, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\80.png, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\96.png, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\glfmbnjhfdnblpgihgcflmnjbpoaegna\1.6.24.1_0\manifest.json, Delete-on-Reboot, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Secure Preferences, Replaced, [2148], [563019],1.0.6747
Adware.MaxiBuy, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Preferences, Replaced, [2148], [563019],1.0.6747

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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