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drog

I can't get rid of a bitcoin miner

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So I've been having this problem for the last few days, my PC was pretty slow so I ran malwarebytes and it found a lot of stuff, then got rid of it but they came back with every reboot so I started looking into solutions online, I guess I've managed to get rid of a few of them by running a lot of different cleaning tools but "conhost.exe" always comes back after reboot. There was also some exes called lsmose and mysa1 mysa2 and mysa3 which I found out online that are bitcoin miners. I can stop the conhost manually by stopping some processes but it comes back after every reboot so I would really appreciate some help. I already ran FRST and attached the files, also not sure if this changes anything but these are the cleaning tools I used: malwarebytes, hitmanpro, roguekiller, mbamantirootkit and combofix

FRST.txt

Addition.txt

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Hi drog :)

My name is Aura and I'll be assisting you with your malware issue. Since we'll be working together, you can call me Aura or Yoan, which is my real name, it's up to you! Now that we've broke the ice, I'll just ask you a few things during the time we'll be working together to clean your system and get it back to an operational state.

  • As you'll notice, the logs we are asking for here are quite lenghty, so it's normal for me to not reply exactly after you post them. This is because I need some time to analyse them and then act accordingly. However, I'll always reply within 24 hours, 48 hours at most if something unexpected happens
  • As long as I'm assisting you on Malwarebytes Forums, in this thread, I'll ask you to not seek assistance anywhere else for any issue related to the system we are working on. If you have an issue, question, etc. about your computer, please ask it in this thread and I'll assist you
  • The same principle applies to any modifications you make to your system, I would like you to ask me before you do any manipulations that aren't in the instructions I posted. This is to ensure that we are operating in sync and I know exactly what's happening on your system
  • If you aren't sure about an instruction I'm giving you, ask me about it. This is to ensure that the clean-up process goes without any issue. I'll answer you and even give you more precise instructions/explanations if you need. There's no shame in asking questions here, better be safe than sorry!
  • If you don't reply to your thread within 3 days, I'll bump this thread to let you know that I'm waiting for you. If you don't reply after 5 days, it'll be closed. If you return after that period, you can send me a PM to get it unlocked and we'll continue where we left off;
  • Since malware can work quickly, we want to get rid of them as fast as we can, before they make unknown changes to the system. This being said, I would appreciate if you could reply to this thread within 24 hours of me posting. This way, we'll have a good clean-up rhythm and the chances of complications will be reduced
  • I'm against any form of pirated, illegal and counterfeit software and material. So if you have any installed on your system, I'll ask you to uninstall them right now. You don't have to tell me if you indeed had some or not, I'll give you the benefit of the doubt. Plus, this would be against Malwarebytes Forums's rules
  • In the end, you are the one asking for assistance here. So if you wish to go a different way during the clean-up, like format and reinstall Windows, you are free to do so. I would appreciate you to let me know about it first, and if you need, I can also assist you in the process
  • I would appreciate if you were to stay with me until the end, which means, until I declare your system clean. Just because your system isn't behaving weirdly anymore, or is running better than before, it doesn't mean that the infection is completely gone
    This being said, I have a full time job so sometimes it'll take longer for me to reply to you. Don't worry, you'll be my first priority as soon as I get home and have time to look at your thread


This being said, it's time to clean-up some malware, so let's get started, shall we? :)

Please give me some time to review your logs and get back at you.

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Hi Aura, thanks in advance for your help, also maybe it's worth noting that in the time between my first post and yours I removed CCcleaner and some conhost.exe files in my computer, now when I reboot conhost doesn't open anymore, but something else does as I get a 1,5 gb svchost if I don't stop a few network services, here are my updated logs if needed

FRST.txt

Addition.txt

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iO3R662.pngFarbar Recovery Scan Tool (FRST) - Fix mode
Follow the instructions below to execute a fix on your system using FRST, and provide the log in your next reply.

  • Download the attached fixlist.txt file, and save it on your Desktop (or wherever your FRST.exe/FRST64.exe executable is located)
  • Right-click on the FRST executable and select Spcusrh.pngRun as Administrator (for Windows Vista, 7, 8, 8.1 and 10 users)
  • Click on the Fix button
    NYA5Cbr.png
  • On completion, a message will come up saying that the fix has been completed and it'll open a log in Notepad
  • Copy and paste its content in your next reply

fixlist.txt

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Also I was wondering if I should've ran the scan and the fix while the "mining" was going on, I always close it manually on startup by stopping a few network services and the conhost and svchost processes because if I don't do that it gets really slow

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No it's fine, it doesn't impact it. Are you able to delete this file?

c:\windows\debug\PASSWD.LOG

 

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I did after closing the LSA proccess and got a reboot in 1 minute message brb

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When I try to delete it it says the file is open in CNG Key Isolation, after I killed the LSA process I got a critical failure restart in 1 minute message but was able to delete it, but it's back again after reboot.

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On the debug folder there is also a item.dat which is open in rundll32.exe and a sub folder called WIA with a text document called wiatrace inside.


**************** Started trace for Module: [sti_ci.dll] in Executable [devsetup.exe] ProcessID: [7028] at 2016/09/25 02:27:37:919 ****************
WIA: 7028.4852 0 0 0 [sti_ci.dll] ERROR: GetDwordFromRegistry, RegQueryValueEx() failed. Err=0x4.
WIA: 7028.4852 0 0 0 [sti_ci.dll] ERROR: GetDwordFromRegistry, RegQueryValueEx() failed. Err=0x4.
WIA: 7028.4852 0 0 0 [sti_ci.dll] ERROR: GetDwordFromRegistry, RegQueryValueEx() failed. Err=0x4.
 

this is what is in it

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Alright. Run a new scan with FRST and provide me the logs.

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Alright, you got reinfected and the reason is simple: it seems that your Windows isn't patched. As long as you don't patch it, it'll keep getting infected over and over again. Start by installing all your Windows Updates. Once it's done, let me know.

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Hi drog,

Are you still with me?

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Due to the lack of feedback, this topic is closed to prevent others from posting here.

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 topic with your request.

This applies only to the originator of this topic. Other members who need assistance please start your own topic in a new thread.

Thanks

 

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