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"PUP.Bitminer": refuses to die

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#1 weathervane


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Posted 04 December 2011 - 10:29 PM

Hello - I'm having an issue with malware on my laptop. About 2 months ago I was hit with AV Security 2012. I used Rkill, then MBAM, Spybot S&D, and SuperAnti Spyware to get rid of it. All has been well until Friday. Now my laptop will run fine for about 15-20 minutes, then individual programs and processes will start to malfunction and freeze. First the taskbar will freeze, then Firefox, word, etc. Ran Rkill and the three programs above, in addition to standard Trend Micro software. A few issues were deleted.

However, one keeps getting picked up by MBAM - something called "PUP.Bitminer." Its location is c:\Windows\assembly\temp\kwrd.dll. MBAM will says it has quarantined and deleted it, but it shows up every time I scan. I am still having the same issue; the laptop becomes unusable after about 20 minutes and I have to manually shut it off. Also, on a couple of occasions it has redirected Google searches, leading my to have to clean off the stuff that it redirects me to. Everything seems to work fine in safe mode, though I still have to watch out for redirects if I leave networking on. MBAM is the only program that even identifies it.

I've seen this problem in a few posts at the MBAM forums, and helpers told people to run ComboFix among other things. However, I know it's a dangerous tool and don't want to use it without being told to by someone who knows what they're doing. I can post DDS logs and such if needed.

Help would be GREATLY appreciated; I have to take an online exam this week and would much prefer to use this laptop. Thanks.

Edited by hamluis, 05 December 2011 - 07:28 AM.
Moved from Win 7 to Am I Infected.

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#2 DellWin7user


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Posted 05 December 2011 - 12:28 AM

I think this might solve your problem.
How to remove PUP.Bitminer

#3 weathervane

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Posted 05 December 2011 - 11:22 AM

I'm not sure how to go about identifying and deleting the things I need to remove. Apparently it is located at c:\Windows\assembly\temp\kwrd.dll.

#4 narenxp


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Posted 05 December 2011 - 11:35 AM


I have seen this on zaccess infected PC.

Senior BC members will help you

good luck

#5 quietman7


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Posted 05 December 2011 - 02:50 PM

Some infections are difficult to remove completely because of their morphing characteristics which allows the malware to regenerate itself or infect critical system files which cannot be cleaned. Sometimes there is an undetected hidden piece of malware such as a rootkit which protects malicious files and registry keys so they cannot be permanently deleted. Disinfection will probably require the use of more powerful tools than we recommend in this forum. Before that can be done you will need to create and post a DDS log for further investigation.

Please read the Preparation Guide For Requesting Help.
  • If you cannot complete a step, then skip it and continue with the next.
  • In Step 7 there are instructions for downloading and running DDS which will create a Pseudo HJT Report as part of its log.
When you have done that, post your log in the Virus, Trojan, Spyware, and Malware Removal Logs forum, NOT here, for assistance by the Malware Response Team Experts. A member of the Team will walk you through, step by step, on how to clean your computer. If you post your log back in this thread, the response from the Malware Response Team will be delayed because your post will have to be moved. This means it will fall in line behind any others posted that same day.

Start a new topic, give it a relevant title and post your log along with a brief description of your problem, a summary of any anti-malware tools you have used and a summary of any steps that you have performed on your own. An expert will analyze your log and reply with instructions advising you what to fix. After doing this, please reply back in this thread with a link to the new topic so we can closed this one.

If HelpBot replies to your topic, please follow Step One so it will report your topic to the team members.
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