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What is Speedomizer?

The Malwarebytes research team has determined that Speedomizer 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 one uses the Ookla Speedtest that you can visit directly without installing the extension..

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

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


and this changed setting:


You may have seen this warning during install:


and you will see this icon in your Chrome taskbar:


How did Speedomizer get on my computer?

Browser hijackers use different methods for distributing themselves. This particular one was downloaded from their website after a redirect.


How do I remove Speedomizer?

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 Speedomizer?
  • No, Malwarebytes removes Speedomizer completely.
  • You may have to remove the Chrome Extension manually under Tools > More Tools > Extensions. Click on the bin behind the Speedomizer entry and confirm Remove in the prompt.
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 Speedomizer hijacker. It would have blocked the site that installed the extension.


Technical details for experts

Possible signs in FRST logs:
 CHR DefaultSearchURL: Default -> hxxp://feed.speedomizer.com/?q={searchTerms}&publisher=speedomizer&barcodeid=524680000000000
 CHR DefaultSearchKeyword: Default -> Speedomizer
 CHR Extension: (Speedomizer) - C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\ackjcfnjkhbgcaieiabkcmbpaglfhifc [2017-11-06]
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\ackjcfnjkhbgcaieiabkcmbpaglfhifc\1.0.2_0
       Adds the file closer.js"="9/19/2017 9:18 AM, 15 bytes, A
       Adds the file manifest.json"="11/6/2017 7:58 AM, 2095 bytes, A
       Adds the file tab.html"="9/19/2017 9:18 AM, 165 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\ackjcfnjkhbgcaieiabkcmbpaglfhifc\1.0.2_0\_metadata
       Adds the file computed_hashes.json"="11/6/2017 7:58 AM, 700 bytes, A
       Adds the file verified_contents.json"="10/18/2017 10:36 AM, 2131 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\ackjcfnjkhbgcaieiabkcmbpaglfhifc\1.0.2_0\images\icons
       Adds the file 128x128.png"="11/6/2017 7:58 AM, 8824 bytes, A
       Adds the file 16x16.png"="11/6/2017 7:58 AM, 601 bytes, A
       Adds the file 64x64.png"="11/6/2017 7:58 AM, 3969 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\ackjcfnjkhbgcaieiabkcmbpaglfhifc\1.0.2_0\scripts
       Adds the file background.js"="10/18/2017 10:44 AM, 23932 bytes, A
       Adds the file sitecontent.js"="9/27/2017 4:23 PM, 77 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Web Applications\_crx_ackjcfnjkhbgcaieiabkcmbpaglfhifc
       Adds the file Speedomizer.ico"="11/6/2017 7:58 AM, 188242 bytes, A
       Adds the file Speedomizer.ico.md5"="11/6/2017 7:58 AM, 16 bytes, A

Registry details [View: All details] (Selection)
       "ackjcfnjkhbgcaieiabkcmbpaglfhifc"="REG_SZ", "4D13F32536EB8432DED945B0FFF6539C6B816A0E2FA4BC367AA540FF711F5ABA"
Malwarebytes log:

-Log Details-
Scan Date: 11/6/17
Scan Time: 8:30 AM
Log File: 6a1cd18c-c2c4-11e7-b9bf-080027750297.json
Administrator: Yes

-Software Information-
Components Version: 1.0.212
Update Package Version: 1.0.3185
License: Premium

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

-Scan Summary-
Scan Type: Threat Scan
Result: Completed
Objects Scanned: 332667
Threats Detected: 18
Threats Quarantined: 17
Time Elapsed: 1 min, 59 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: 0
(No malicious items detected)

Registry Data: 0
(No malicious items detected)

Data Stream: 0
(No malicious items detected)

Folder: 6
PUP.Optional.Speedomizer, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\ackjcfnjkhbgcaieiabkcmbpaglfhifc\1.0.2_0\images\icons, Quarantined, [16324], [453746],1.0.3185
PUP.Optional.Speedomizer, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\ackjcfnjkhbgcaieiabkcmbpaglfhifc\1.0.2_0\_metadata, Quarantined, [16324], [453746],1.0.3185
PUP.Optional.Speedomizer, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\ackjcfnjkhbgcaieiabkcmbpaglfhifc\1.0.2_0\scripts, Quarantined, [16324], [453746],1.0.3185
PUP.Optional.Speedomizer, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\ackjcfnjkhbgcaieiabkcmbpaglfhifc\1.0.2_0\images, Quarantined, [16324], [453746],1.0.3185
PUP.Optional.Speedomizer, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\ackjcfnjkhbgcaieiabkcmbpaglfhifc\1.0.2_0, Quarantined, [16324], [453746],1.0.3185
PUP.Optional.Speedomizer, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\EXTENSIONS\ackjcfnjkhbgcaieiabkcmbpaglfhifc, Quarantined, [16324], [453746],1.0.3185

File: 12
PUP.Optional.Speedomizer, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\ackjcfnjkhbgcaieiabkcmbpaglfhifc\1.0.2_0\images\icons\128x128.png, Quarantined, [16324], [453746],1.0.3185
PUP.Optional.Speedomizer, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\ackjcfnjkhbgcaieiabkcmbpaglfhifc\1.0.2_0\images\icons\16x16.png, Quarantined, [16324], [453746],1.0.3185
PUP.Optional.Speedomizer, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\ackjcfnjkhbgcaieiabkcmbpaglfhifc\1.0.2_0\images\icons\64x64.png, Quarantined, [16324], [453746],1.0.3185
PUP.Optional.Speedomizer, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\ackjcfnjkhbgcaieiabkcmbpaglfhifc\1.0.2_0\scripts\background.js, Quarantined, [16324], [453746],1.0.3185
PUP.Optional.Speedomizer, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\ackjcfnjkhbgcaieiabkcmbpaglfhifc\1.0.2_0\scripts\sitecontent.js, Quarantined, [16324], [453746],1.0.3185
PUP.Optional.Speedomizer, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\ackjcfnjkhbgcaieiabkcmbpaglfhifc\1.0.2_0\_metadata\computed_hashes.json, Quarantined, [16324], [453746],1.0.3185
PUP.Optional.Speedomizer, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\ackjcfnjkhbgcaieiabkcmbpaglfhifc\1.0.2_0\_metadata\verified_contents.json, Quarantined, [16324], [453746],1.0.3185
PUP.Optional.Speedomizer, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\ackjcfnjkhbgcaieiabkcmbpaglfhifc\1.0.2_0\closer.js, Quarantined, [16324], [453746],1.0.3185
PUP.Optional.Speedomizer, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\ackjcfnjkhbgcaieiabkcmbpaglfhifc\1.0.2_0\manifest.json, Quarantined, [16324], [453746],1.0.3185
PUP.Optional.Speedomizer, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\ackjcfnjkhbgcaieiabkcmbpaglfhifc\1.0.2_0\tab.html, Quarantined, [16324], [453746],1.0.3185
PUP.Optional.Speedomizer, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\DEFAULT\Secure Preferences, Removal Failed, [16324], [453746],1.0.3185
PUP.Optional.Speedomizer, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\DEFAULT\Preferences, Replaced, [16324], [453746],1.0.3185

Physical Sector: 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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