What is msb.exe?

msb.exe is usually located in the 'C:\DOCUME~1\dad\LOCALS~1\Temp\' folder.

If you have additional information about the file, please share it with the FreeFixer users by posting a comment at the bottom of this page.

Vendor and version information [?]

msb.exe does not have any version or vendor information.

Digital signatures [?]

msb.exe is not signed.

Filename variants

msb.exe may also use other filenames. The most common variants are listed below:

Folder name variants

msb.exe may also be located in other folders than C:\DOCUME~1\dad\LOCALS~1\Temp\. The most common variants are listed below:

Hashes [?]


Error Messages

These are some of the error messages that can appear related to msb.exe:

msb.exe has encountered a problem and needs to close. We are sorry for the inconvenience.

msb.exe - Application Error. The instruction at "0xXXXXXXXX" referenced memory at "0xXXXXXXXX". The memory could not be "read/written". Click on OK to terminate the program.

msb.exe has stopped working.

End Program - msb.exe. This program is not responding.

msb.exe is not a valid Win32 application.

msb.exe - Application Error. The application failed to initialize properly (0xXXXXXXXX). Click OK to terminate the application.

What will you do with msb.exe?

To help other users, please let us know what you will do with msb.exe:

What did other users do?

The poll result listed below shows what users chose to do with msb.exe. 93% have voted for removal. Based on votes from 792 users.

User vote results: There were 736 votes to remove and 56 votes to keep

NOTE: Please do not use this poll as the only source of input to determine what you will do with msb.exe.

Malware or legitimate?

If you feel that you need more information to determine if your should keep this file or remove it, please read this guide.

Please select the option that best describe your thoughts on the information provided on this web page

Free online surveys

And now some shameless self promotion ;)

A screenshot of FreeFixer's scan result.Hi, my name is Roger Karlsson. I've been running this website since 2006. I want to let you know about the FreeFixer program. FreeFixer is a freeware tool that analyzes your system and let you manually identify unwanted programs. Once you've identified some malware files, FreeFixer is pretty good at removing them. You can download FreeFixer here. It runs on Windows 2000/XP/2003/2008/2016/2019/Vista/7/8/8.1/10. Supports both 32- and 64-bit Windows.

If you have questions, feedback on FreeFixer or the freefixer.com website, need help analyzing FreeFixer's scan result or just want to say hello, please contact me. You can find my email address at the contact page.


Please share with the other users what you think about this file. What does this file do? Is it legitimate or something that your computer is better without? Do you know how it was installed on your system? Did you install it yourself or did it come bundled with some other software? Is it running smoothly or do you get some error message? Any information that will help to document this file is welcome. Thank you for your contributions.

I'm reading all new comments so don't hesitate to post a question about the file. If I don't have the answer perhaps another user can help you.

Roger Karlsson writes

2 thumbs

msb.exe does not have any version information, nor any digital signature. It's located in the TEMP folder. Smells like a malware file to me.

# 2 Jul 2009, 0:55

Roger Karlsson writes

4 thumbs

msb.exe is distributed by many of the faked movie sites. The faked sites are often named "PornTube" or "PornTube v2" and have the same look-and-feel as YouTube. These sites usually claim that you have to install a new codec, the latest flash player, or some OCX control to watch the movie. If you installed what they suggest you may get infected with msb.exe.

msa.exe is also installed in the same way:

msb.exe removal instructions:
1. Download and install FreeFixer. You can download it here: http://www.freefixer.com/ It's freeware.
2. Start FreeFixer and click "Scan". The scan should finish in 5 to 10 minutes.
3. In the scan result, locate the items that mention the msb.exe file and check its "Delete" checkbox. msb.exe usually appear under "Processes" and "Registry startups" in FreeFixer's scan result. DO NOT check anything else for deletion, unless you are 100% sure it's malware.
4. Click "Fix".
5. Reboot your machine.
6. Start FreeFixer and scan your computer again.
7. Verify that the msb.exe file no longer appear anywhere in the scan result.
8. Done.

Did this completely remove msb.exe from your computer?

Tip: msb.exe often comes with other malware files such as msa.exe, a.exe, b.exe, c.exe, sshnas.dll, sshnas21.dll, etc.

# 3 Jul 2009, 16:29

Mark writes

2 thumbs

Hello Roger, first off thankyou for the site and your commitment on helping others, I will let friends and family know of your site, as well as the IT dept where I work. Now then, I seem to be infected with this "msb.exe" you talk of above. I have downloaded your freefix but that did not seem to rid me of the problem, they are still in my files when I searched after the scan and fix/delete option. It is using about 80-100% of my CPU and when it is less an upgrader is trying to use the remainder. I also have a clicking sound similar to when you click the mouse to open programs. the sound is driving me crazy and is random sometimes clicking multiple times, now and then only once or twice. It is every few seconds. My Panda anti virus did not detect this, my son did tell me he was on a you tube site this AM and it seems that is when it started happening. he also was on a game site and may have used a flash player program (dont know if that is warranted info). I hope to retry and fix this problem and if I do I will contact you with the info. Peace, Mark

# 23 Jul 2009, 13:27

.Joel. writes

-1 thumb

So does anyone know of a fix for this msb.exe? Is there a way to clean it out?

# 21 Aug 2009, 14:03

Roger Holloway writes

0 thumbs

just encountered this today myself. YouTube and games were the course today, YouTube when it started. I have done nothing so far to remove or alter it. The AVG anti virus keeps popping up. I have been just reading about it to this point. If someone out there knws more, please speak up. The thing seems to gobble up lots of the "speed" I had.

# 13 Oct 2009, 20:51

Charles Jones writes

1 thumb

Hi I am running AVG 9.0 (the three 30 day trial because i am a cheapskate) and it detected MSB.exe yesterday. Now I seem to remember being prompted on Facebook to install a new flash player version back when I didnt have antivirus....so that is what may have caused it...I was even suspicious then. However it seems that AVG has knocked the bugger off my computer and all is well. I have just done a search and it is nowhere to be seen. Hope that helps.

# 5 Nov 2009, 6:03

Roger Karlsson writes

0 thumbs

I ran into msb.exe again today. I was distributed using the same method as back in July, where a site claims that you need to install a "Flash Player" to view a video. Once you install the "Flash Player" you will be infected with msb.exe and some other malware files.

I used FreeFixer to remove msb.exe. It was located under "Processes" and "Recently created or modified files" in FreeFixer's scan result.

Here's the msb.exe scan result thanks to VirusTotal. Only 8 out of 41 anti-virus scanners detected this variant of msb.exe:

Hope this helped.

# 25 Nov 2009, 0:51

simcha writes

1 thumb

MSA.exe and msb.exe are of course still around and may bring you telnet6.exe and ncpaq.exe which you won't want either. the choices mentioned here are maybe adequate to stop and remove this, so remember AVG as more worthy of your money than Norton/Symantec or McAFEE$ product$

# 2 Dec 2009, 16:34

Amy F writes

0 thumbs

So.. I have msb.exe, b.exe, svchost.exe and this weird one that nobody seems to know about called yuuqoib.exe.. Does anyone know about the last one and how to get rid of it? I did a Malwarebytes scan and came up with 200 infected viruses but the ones in the processes seem to have stuck. Anybody that knows anything about this yuuqoib.exe virus, I'd really appreciate if you could let me know. My computer has been SO slow for over a month now! Thanks! (=

# 5 Dec 2009, 4:49

Roger Karlsson writes

1 thumb

@Amy: yuuqoib.exe sounds like malware to me. Please post yuuqoib.exe to the 40+ anti-virus programs over at virustotal.com to make sure it really is malware.

If you know the location of yuuqoib.exe on your hard drive it might be possible to delete it manually using Windows Explorer. If that does not work, try FreeFixer which often can deal with files that Explorer cannot remove.

# 5 Dec 2009, 8:03

Amy F writes

-1 thumb

Roger.. I'm updating my anti-virus right now so hopefully it'll catch it. I'm going to look for more info on the virus too. Thank you for your help.

# 6 Dec 2009, 14:09

Mair writes

0 thumbs

I had the same prob with installing new flash goth the virus MSA and MSB I have 2 programs that work wonders Advanced system care free and another this ASC told me to download IObot 360 also free I run scans every few days since I had mcafee (dont work) and IObot found it and removed it (also have ad-aware thats actualy what scans daily and told me of the thret and can also remove it as well) but you need to restart your computer so your boot can be cleaned properly or it can hide in XML files and you can get it back the next time you log on the net.

I hope this helps any one

# 10 Dec 2009, 19:39

The Gh0ce_>0 writes

2 thumbs

removal of this virus seems trivial to me (compared to many of the other viruses I have cleaned). I recommend manual cleaning as it is easier to verify that it worked. First, download process explorer (google it. It is a good program). Start it up with admin access (right click run as admin on vista). Look for any processes that you do not know what they are and do a quick google for them (to verify that you want them removed). For msa.exe and msb.exe also look for a.exe or b.exe or <any letter>.exe. Terminate those processes. Since these programs are not signed (as commented several times here), sort it by description as the description of these programs is empty(saves a lot of time). Anything you don't know what it is or if the location sounds iffy, kill it. (you can also sort by company name as it should be blank too). After doing that, load up your registry editor (start->run->regedit) and go to HKEY_CURRENT_USER\software\microsoft\windows\currentversion\run and HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\run and delete any that look like viruses (ie any that are running from c:\windows or c:\windows\system32 or any temp folder UNLESS you know what they are or you put them there. For example if you installed a new program it sometimes puts stuff in temp or some programs do install to windows and need to be run from there, but those are usually drivers. If in doubt, find the file on your local disk and verify it's manufacturer, description, etc).
1) deleting key's from the registry can make your computer unbootable if you delete the wrong entries. Since you are only modifying the run section, your computer should still boot properly but some software may not work.
2) deleting files from your local disk may cause your computer to not boot if you delete a critical file. renaming may be a better option as you can still boot off of a live cd and repair if things go bad.

I take no responsibility if this breaks your computer. Following these instructions is at your own risk. I preformed the steps mentioned above and have not noticed any ill effects.

The Gh0ce_>0

# 12 Dec 2009, 10:53

myl kavas writes

2 thumbs

Roger, freefixer remmoved the msb.exe malware from my vista home premium system. Thank you so very very much.I will say that users of your program should follow the instructions carefully and go slowly through the scan results. Also I might add that msb.exe removal required a reboot which during boot freefixer stated that the msb.exe could not be found.This confused me a bit but all is well. Thanks again,it's soldiers like you that help this world battle misguided programmers.Take care.

# 1 Mar 2010, 17:43

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