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Firefox.patch.js not being detected


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Hello jotto and welcome to Malwarebytes,

My screen name is kevinf80, i`m here to help clean up your system. Make sure to run all scans from accounts with Administrator status, continue as follows please:

Anyone other than the original starter of this thread please DO NOT follow the instructions and advice posted as replies here, my help and advice is NOT related to your system and will probably cause more harm than good...

Change the download folder setting in the Default Browser only. so all of the tools we may use are saved to the Desktop:

user posted imageGoogle Chrome - Click the "Customize and control Google Chrome" button in the upper right-corner of the browser. user posted image
Choose Settings. at the bottom of the screen click the
"Show advanced settings..." link. Scroll down to find the Downloads section and click the Change... button. Select your desktop and click OK.

user posted imageMozilla Firefox - Click the "Open Menu" button in the upper right-corner of the browser. user posted image Choose Options. In the downloads section, click the Browse button, click on the Desktop folder and the click the "Select Folder" button. Click OK to get out of the Options menu.

user posted imageInternet Explorer - Click the Tools menu in the upper right-corner of the browser. user posted image Select View downloads. Select the Options link in the lower left of the window. Click Browse and select the Desktop and then choose the Select Folder button. Click OK to get out of the download options screen and then click Close to get out of the View Downloads screen.
NOTE: IE8 Does not support changing download locations in this manner. You will need to download the tool(s) to the default folder, usually Downloads, then copy them to the desktop.

user posted imageChange default download folder location in Edge -Boot to a user account with admin status, select start > file explorer > right click on "Downloads" folder and select "Properties"

In the new window select "Location" tab > clear the text field box and type in or copy/paste %userprofile%\Desktop > select "Apply" then "OK"

Be aware you are not changing the Browser download folder location, you are changing the user’s download directory location.....

Next,

Follow the instructions in the following link to show hidden files:

http://www.howtogeek.com/howto/windows-vista/show-hidden-files-and-folders-in-windows-vista/

Next,

Clean install Malwarebytes from version 2 to version 3...

Please download MBAM-clean and save it to your desktop.
 
  • Right-click on mbam-clean.exe icon and select user posted image Run as Administrator to start the tool.
  • It will ask you to reboot the machine - please do so.
  • Run the cleaner tool again, re-boot when complete. <<<---do not miss this step


If you have lost the activation licence key information it can be located here: http://www.cleverbridge.com/342/?scope=cusecolp

Download Malwarebytes version 3 from the following link:

https://www.malwarebytes.com/mwb-download/thankyou/

Double click on the installer and follow the prompts. If necessary select the Blue Help tab for video instructions....

When the install completes and is updated do the following:

Open Malwarebytes, select > "settings" > "protection tab"

Scroll down to "Scan Options" ensure Scan for Rootkits and Scan within Archives are both on....

Go back to "DashBoard" select the Blue "Scan Now" tab......

When the scan completes deal with any found entries... Then select "Export Summary" then "Text File (*.txt)" name that log and save , you can copy or attach that to your reply...

If you have lost the activation licence key information it can be located here: http://www.cleverbridge.com/342/?scope=cusecolp

Next,

Download Farbar Recovery Scan Tool and save it to your desktop.

Alternative download option: http://www.techspot.com/downloads/6731-farbar-recovery-scan-tool.html

Note: You need to run the version compatible with your system (32 bit or 64 bit). If you are not sure which version applies to your system download both of them and try to run them. Only one of them will run on your system, that will be the right version.

If your security alerts to FRST either, accept the alert or turn your security off to allow FRST to run. It is not malicious or infected in any way...

Be aware FRST must be run from an account with Administrator status...

  • Double-click to run it. When the tool opens click Yes to disclaimer.(Windows 8/10 users will be prompted about Windows SmartScreen protection - click More information and Run.)
  • Make sure Addition.txt is checkmarked under "Optional scans"
  • Press Scan button to run the tool....
  • It will make a log (FRST.txt) in the same directory the tool is run. Please copy and paste it to your reply.
  • The tool will also make a log named (Addition.txt) Please attach that log to your reply.


Let me see those logs...

Thank you,

Kevin..
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Kevin - I ran clean twice, installed version 3.0 scanned and installed FRST64.  When using the alternate location Malwarebytes stopped me from getting to a site...  So I used the location in the installer name link.   Attached are the scan export, addition and frst.txt

I look forward to the next steps. 

no mention of firefox.patch.js

Jon

Addition.txt

FRST.txt

scanexport.txt

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Hiya Jon,

Those logs are clean, run one more scan....

Go here and click 'SCAN NOW' under 'ESET Online Scanner' save to your Desktop.

Turn off the real-time scanner of any existing antivirus program before performing the online scan. Here's how

Right click on user posted image and select "Run as Administrator"

In the new Window accept the terms of service

user posted image

In the new Window select "Enable detection of potentially unwanted applictions" then expand "Advanced Settings"

user posted image

In the new Window checkmark (tick) the entries as shown, make sure "Clean threats automatically" is not checkmarked. Now select "Scan"

user posted image

In the new Window new virus database signatures will download, Do Not Select Stop

user posted image

The Window will progress showing the scan in action....

user posted image

In the new Window if no threats are found, select "Delete applications data on close" then select "Finish" no log is produced, confirm that in your reply...

user posted image

If threats are found the following Window will open:

user posted image

Click on "Select All" then "Save to Text file" name and save that file, attach to your reply.

Now select "Do not clean" and then close out....
 
Thank you,
 
Kevin..
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That entry is for Recuva is that file recovery software...? free software often comes with unwanted extras. Never use the default install option, always use custom so unwanted extras can be unchecked...

This tool is also good to run, is free and clean of bundled extras: https://unchecky.com/

Also install McShield, is free and has no bundled extras:  http://www.mcshield.net/     to protect your system from potential malware/infection when plugging in USB devices

As your logs are clean we can remove tools used by us....

Download "Delfix by Xplode" and save it to your desktop.

Or use the following if first link is down:

"Delfix link mirror"

If your security program alerts to Delfix either, accept the alert or turn your security off.

Double Click to start the program. If you are using Vista or higher, please right-click and choose run as administrator

Make Sure the following items are checked:

 
  • Remove disinfection tools <----- this will remove tools we have used.
  • Purge System Restore <--- this will remove all previous and possibly exploited restore points, a new point relative to system status at present will be created.
  • Reset system settings <--- this will reset any system settings back to default that were changed either by us during cleansing or malware/infection


Now click on "Run" and wait patiently until the tool has completed.

The tool will create a log when it has completed. We don't need you to post this.

Any remnant files/logs from tools we have used can be deleted…

Next,

Read the following links to fully understand PC Security and Best Practices, you may find them useful....

Answers to Common Security Questions and best Practices

Do I need a Registry Cleaner?

Take care and surf safe

Kevin... user posted image
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Hi Kevin.  We will remove Recurva.  and  clean up all the tools.  I cannot tell you why that was downloaded!!!    Thank you.  We still have not captured the Firefox.patch.js malware. 

This machine runs Avast and Malwarebytes....  We will restart Malwarebytes, avast has already been restarted.

If I need to run other tests, please let me know.  I will touch base once all the cleanups are done,.

Thank you.  Jon Otto

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Kevin.  Reran ESET to remove Recursa.  Also DelFix to remove what the scans created.  I manually removed files it did not remove.  Restarted Malwarebytes 3.0 and Avast. 

Still to detection of the original problem firefox.patch.js.  If you have a clue as to that one, I would appreciate hearing about it.  Neither Malwarebytes nor Avast detect it. 

Thank you for your time.  Jon

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HI Kevin.  Good catch.  What I was originally reporting was that Malewarebytes  was not detecting any problem when we received fake updates for Firefox for something called firefox.patch.js   I searched for the update on your site and found nothing so I was hoping that maybe I could help you resolve the problem.  There is a suggested manual removal method, however, I am not that trusting of the sources of self help.  

You are correct, there is nothing in the log, but the symptom continues...  Check out ....

https://support.mozilla.org/t5/Problems-with-add-ons-plugins-or/I-found-a-fake-Firefox-update/ta-p/37696

Thank you for your help.  Jon Otto

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Hello Jon,

Thanks for the the update on your system status, as you still have outstanding concerns lets try the following:

d/l FRST again http://www.bleepingcomputer.com/download/farbar-recovery-scan-tool/

Run FRST one more time:

Type the following in the edit box after "Search:".

firefox.patch.js

Click Search Files button and post the log it makes to your reply.

Next,

Run FRST one more time:

Type the following in the edit box after "Search:".

firefox.patch.js

Click Search Registry button and post the log it makes to your reply.

If both of those searches are clear is maybe worthwhile to make a clean reinstall of Firefox as follows:

Use the following link for instructions how to back up your bookmarks, same link can be used to import saved Bookmarks:

https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer

Next,

Go here: http://www.mozilla.org/en-US/ download save the latest version of Firefox.. We will install this later...

Next,

Lets totally remove Firefox and start over.

Go here: https://support.mozilla.org/en-US/kb/uninstall-firefox-from-your-computer and follow those instructions...

Ensure when the uninstall completes to navigate to and delete the firefox installation folder (if present):

(32-bit Windows) C:\Program Files\Mozilla Firefox
(64-bit Windows) C:\Program Files (x86)\Mozilla Firefox

It is essential the installation folder is removed. Re-boot your system when that is completed....

Next,

To remove all remaining data and profile information...

Press "Windows key + R" to open the Run box
In the Run box, type in or copy and paste %APPDATA%
Click OK. A Windows Explorer window will appear.
In this window, choose/open in succession Mozilla > Firefox > Profiles.
Select Delete on each entry in reverse, eg Profiles > Delete. Firefox > Delete. Mozilla > Delete.

Re-boot your system when complete!

Next,

Use the Mozilla Firefox installer to reinstall your Browser....

When Firefox is installed and open select these keys together :- Ctrl - Shift - A that will access Addons manger, this gives access to find addons/extensions, use, start, stop or disable those features etc....

Ensure to use search to find and install AdBlock plus, Flashblock and DrWeb Anti-Virus Link Checker plus any other addons you normally use....

Thank you,

Kevin...

 

 

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Kevin.  redownloaded and ran FRST  Logs are attached.  i see nothing, do you???   I removed Firefox and reinstalled Firefox  I used the default download for a 64-bit win 81 and was given 51.0.1 for 32-bit - which is what was here.  Bookmarks were reimported.  It will be a matter of time to see if the fake patch is offered again.

Thank you for your time.  Jon

Addition.txt

FRST.txt

Search.txt

SearchReg.txt

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Hiya Jon,

Yes those logs are clean, I guess we can clear out FRST and its produced folders once more...

Download "Delfix by Xplode" and save it to your desktop.

Or use the following if first link is down:

"Delfix link mirror"

If your security program alerts to Delfix either, accept the alert or turn your security off.

Double Click to start the program. If you are using Vista or higher, please right-click and choose run as administrator

Make Sure the following item is the only one checked:

 
  • Remove disinfection tools <----- this will remove tools we have used.



Now click on "Run" and wait patiently until the tool has completed.

The tool will create a log when it has completed. We don't need you to post this.

Any remnant files/logs from tools we have used can be deleted…

When complete you should be good to go...

Take care and surf safe..

Regards,

Kevin...

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  • Root Admin

Glad we could help. :)If you need this topic reopened, please send a Private Message to any one of the moderating team members. Please include a link to this thread with your request. This applies only to the originator of this thread.Other members who need assistance please start your own topic in a new thread. Thanks!

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