Pop-ups about "JS:Redirector-BXI [Trj]" upon opening a new page in Firefox

Viruses and worms
1

Hello,

I seem to have a little virus problem. I have the latest free version of Avast installed. Almost every time I open a new page in Firefox, Avast generates pop-ups indicating that it has blocked a harmful webpage or file, sometimes multiple times. The infection is specified as JS:Redirector-BXI [Trj] and the process affected is just “firefox.exe”. I’m assuming this is a JavaScript related issue, but I haven’t been able to find a permanent fix yet. I am well aware that free software will often try to install malware that causes such issues, but I have not installed any such software lately. This has only started happening very recently, and the only software I installed recently is CCleaner, which I doubt is the culprit here.

I have tried a clean reinstall of Firefox, both a full scan and a boot-time scan using Avast (which came up with nothing), a Malwarebytes Anti-Malware scan (which also came up with nothing), starting Firefox in Safe Mode, none of which has fixed the problem. The only extensions I have are AdBlock Plus and the extension that comes with Avast (Avast Online Security), which is disabled anyway. Firefox is my default web browser, and this issue only happens in Firefox and not in Internet Explorer. The only thing I did that fixed the problem was renaming “firefox.exe” and running the renamed file, but I am looking for a more permanent solution. I am using Windows 8.1 64-bit and the latest version of Firefox.

Please let me know if you require further information. Any advice on how to get rid of this malware would be greatly appreciated. Thanks in advance.

Edit: I had been connecting to the Internet through a different router at a different location (in fact in a different country) before this issue appeared. In fact, this issue popped up immediately after I started connecting through the current one. Furthermore, I have this issue on both of my laptops, which worked fine before. This leads me to believe that the problem is with the router/network and not with the computer itself. However, resetting the router did not fix the problem.

2

Hi Puk, welcome to the forum :slight_smile:

Look at this tutorial https://forum.avast.com/index.php?topic=53253.0

Scroll down to “Farbar Recovery Scan Tool” and follow the directions.
Attach both FRST.tx and Additions.txt logs in your next reply.
As soon as an expert is online and available he/she will help you.

Greetz, Red.

3

Hi Rednose,

FRST.txt and Addition.txt are attached. I have also updated my original post with more details which might help. Thanks.

4

Could you let me know if this stops it

CAUTION : This fix is only valid for this specific machine, using it on another may break your computer

Open notepad and copy/paste the text in the quotebox below into it:

CreateRestorePoint: HKLM-x32\...\Run: [] => [X] Reg: reg delete HKLM\SOFTWARE\Policies\Microsoft\Windows\IPSec\Policy\Local /f Reg: reg add HKLM\SOFTWARE\Policies\Microsoft\Windows\IPSec\Policy\Local /f Reg: Reg Delete "HKLM\SOFTWARE\Microsoft\Shared Tools\MSConfig\startupreg" /F Reg: Reg Add "HKLM\SOFTWARE\Microsoft\Shared Tools\MSConfig\startupreg" /F RemoveProxy: EmptyTemp: CMD: bitsadmin /reset /allusers

Save this as fixlist.txt, in the same location as FRST.exe

https://dl.dropboxusercontent.com/u/73555776/FRSTfix.JPG

Run FRST and press Fix
On completion a log will be generated please post that

THEN

Please download AdwCleaner by Xplode onto your desktop.

[*]Close all open programs and internet browsers.
[*]Double click on AdwCleaner.exe to run the tool.
[*]Click on Scan.
[*]After the scan is complete click on “Clean”
[*]Confirm each time with Ok.
[*]Your computer will be rebooted automatically. A text file will open after the restart.
[*]Please post the content of that logfile with your next answer.
[*]You can find the logfile at C:\AdwCleaner[S0].txt as well.

5

Hi essexboy,

I no longer seem to have the problem after running an FRST fix on both of my laptops, thanks a lot for that. Unfortunately, I accidentally ran it a second time on one of my laptops so the first fix log was overwritten. I am still attaching the second Fixlog.txt. The original fix log on my other laptop is also attached (Fixlog_2.txt).

I have also performed “Clean” with AdwCleaner although it doesn’t seem to have done much. In any case, the AdwCleaner log is attached.

Any idea what this problem might be caused by? How can I be sure that I am rid of it and how can it be avoided in the future?

Many thanks.

6

Basically I just emptied all your temp folders where it was residing

Any further problems

7

No other problems so far, thanks a lot.

8

Subject to no further problems :slight_smile:

I will remove my tools now and give some recommendations, but, I would like you to run for 24 hours or so and come back if you have any problems

Now the best part of the day ----- Your log now appears clean :thumbsup:

A good workman always cleans up after himself so…The following will implement some cleanup procedures as well as reset System Restore points:

Remove tools

Download and run Delfix
Select the options as shown

https://dl.dropboxusercontent.com/u/73555776/delfix.JPG

: Keep Java Updated :

WARNING: Java is the #1 exploited program at this time. The Department of Homeland Security recommends that computer users disable Java
See this article

I would recommend that you completely uninstall Java unless you need it to run an important software.
In that instance I would recommend that you disable Java in your browsers until you need it for that software and then enable it. (See How to diasble Java in your web browser and How to unplug Java from the browser)

If you do need to keep Java then download JavaRa
Run the programme and select Remove Java Runtime. Uninstall all versions of Java present
Once done then run it again and select Update Java runtime > Download and install Latest version

https://dl.dropboxusercontent.com/u/73555776/javara.JPG

Now that you are clean, to help protect your computer in the future I recommend that you get the following free programmes:

CryptoPrevent install this programme to lock down and prevent crypto ransome ware

https://dl.dropboxusercontent.com/u/73555776/CryptoPrevent.JPG

Malwarebytes

Update and run weekly to keep your system clean

Unchecky

Click on the link above to be taken to Unchecky.com
click the very large Download button.
click Save
Click Open folder
Right click on the Unchecky_setup and choose to Run as Administrator
Once open click the Install button.
Then click on Finish
Unchecky is now installed and will help you keep unwanted check boxes unchecked, this is a fire and forget programme :wink:

It is critical to have both a firewall and anti virus to protect your system and to keep them updated.

To learn more about how to protect yourself while on the internet read this little guide Best security practices Keep safe :wave:

9

Thanks for the suggestions. I will post back in a day or so if I have any problems. Thanks again for your help.

10

:slight_smile: