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What is Toothy?

The Malwarebytes research team has determined that Toothy is a forced extension.

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

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

main.png

with these properties:

warning4.png

and these warnings during install:

warning1.png

warning2.png

warning3.png

How did Toothy get on my computer?

Browser hijackers use different methods for distributing themselves. This particular one was a forced Chrome extension.
But it was also available in the webstore at the time of writing.

webstore.png

How do I remove Toothy?

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 Toothy?
  • No, Malwarebytes removes Toothy completely.
  • You may have to remove the Chrome Extension manually under Tools > More Tools > Extensions. Click on the bin behind the Toothy 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.

We protect our customers from forced extensions by blocking the sites that spread them:

protection2.png

Technical details for experts

Possible signs in FRST logs:

 
 CHR Extension: (Toothy) - C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\kpohflomnaifbkibmjdappdifjmojgcp [2017-09-26]
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\kpohflomnaifbkibmjdappdifjmojgcp\4.9.354_0
       Adds the file 1506323501957.html"="9/25/2017 10:21 AM, 526 bytes, A
       Adds the file 1506323501957.js"="9/25/2017 7:12 AM, 293399 bytes, A
       Adds the file 1506323501957_128.png"="9/26/2017 9:27 AM, 4306 bytes, A
       Adds the file 1506323501957_16.png"="9/26/2017 9:27 AM, 520 bytes, A
       Adds the file 1506323501957_48.png"="9/26/2017 9:27 AM, 2736 bytes, A
       Adds the file 1506323501957_512.png"="9/25/2017 7:12 AM, 59428 bytes, A
       Adds the file manifest.json"="9/26/2017 9:27 AM, 1350 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\kpohflomnaifbkibmjdappdifjmojgcp\4.9.354_0\_locales\en
       Adds the file messages.json"="9/26/2017 9:27 AM, 153 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\kpohflomnaifbkibmjdappdifjmojgcp\4.9.354_0\_metadata
       Adds the file computed_hashes.json"="9/26/2017 9:27 AM, 4361 bytes, A
       Adds the file verified_contents.json"="9/25/2017 10:19 AM, 2151 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Local Extension Settings\kpohflomnaifbkibmjdappdifjmojgcp
       Adds the file 000003.log"="9/26/2017 9:27 AM, 0 bytes, A
       Adds the file CURRENT"="9/26/2017 9:27 AM, 16 bytes, A
       Adds the file LOCK"="9/26/2017 9:27 AM, 0 bytes, A
       Adds the file LOG"="9/26/2017 9:27 AM, 0 bytes, A
       Adds the file MANIFEST-000001"="9/26/2017 9:27 AM, 41 bytes, A
Malwarebytes log:
 
Malwarebytes
www.malwarebytes.com

-Log Details-
Scan Date: 9/26/17
Scan Time: 9:38 AM
Log File: a3be5516-a28d-11e7-b751-080027750297.json
Administrator: Yes

-Software Information-
Version: 3.2.2.2018
Components Version: 1.0.188
Update Package Version: 1.0.2887
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: 321298
Threats Detected: 15
Threats Quarantined: 15
Time Elapsed: 2 min, 4 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: 5
Rogue.ForcedExtension, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\kpohflomnaifbkibmjdappdifjmojgcp\4.9.354_0\_locales\en, Quarantined, [625], [439099],1.0.2887
Rogue.ForcedExtension, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\kpohflomnaifbkibmjdappdifjmojgcp\4.9.354_0\_metadata, Quarantined, [625], [439099],1.0.2887
Rogue.ForcedExtension, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\kpohflomnaifbkibmjdappdifjmojgcp\4.9.354_0\_locales, Quarantined, [625], [439099],1.0.2887
Rogue.ForcedExtension, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\kpohflomnaifbkibmjdappdifjmojgcp\4.9.354_0, Quarantined, [625], [439099],1.0.2887
Rogue.ForcedExtension, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\DEFAULT\EXTENSIONS\KPOHFLOMNAIFBKIBMJDAPPDIFJMOJGCP, Quarantined, [625], [439099],1.0.2887

File: 10
Rogue.ForcedExtension, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\kpohflomnaifbkibmjdappdifjmojgcp\4.9.354_0\_locales\en\messages.json, Quarantined, [625], [439099],1.0.2887
Rogue.ForcedExtension, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\kpohflomnaifbkibmjdappdifjmojgcp\4.9.354_0\_metadata\computed_hashes.json, Quarantined, [625], [439099],1.0.2887
Rogue.ForcedExtension, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\kpohflomnaifbkibmjdappdifjmojgcp\4.9.354_0\_metadata\verified_contents.json, Quarantined, [625], [439099],1.0.2887
Rogue.ForcedExtension, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\kpohflomnaifbkibmjdappdifjmojgcp\4.9.354_0\1506323501957.html, Quarantined, [625], [439099],1.0.2887
Rogue.ForcedExtension, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\kpohflomnaifbkibmjdappdifjmojgcp\4.9.354_0\1506323501957.js, Quarantined, [625], [439099],1.0.2887
Rogue.ForcedExtension, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\kpohflomnaifbkibmjdappdifjmojgcp\4.9.354_0\1506323501957_128.png, Quarantined, [625], [439099],1.0.2887
Rogue.ForcedExtension, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\kpohflomnaifbkibmjdappdifjmojgcp\4.9.354_0\1506323501957_16.png, Quarantined, [625], [439099],1.0.2887
Rogue.ForcedExtension, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\kpohflomnaifbkibmjdappdifjmojgcp\4.9.354_0\1506323501957_48.png, Quarantined, [625], [439099],1.0.2887
Rogue.ForcedExtension, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\kpohflomnaifbkibmjdappdifjmojgcp\4.9.354_0\1506323501957_512.png, Quarantined, [625], [439099],1.0.2887
Rogue.ForcedExtension, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\kpohflomnaifbkibmjdappdifjmojgcp\4.9.354_0\manifest.json, Quarantined, [625], [439099],1.0.2887

Physical Sector: 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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