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TR\CoinMiner trojan


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12 replies to this topic

#1 kingsman

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Posted 22 March 2015 - 09:29 AM

Hi,

Every time I boot my Avira displays a message about a TR\CoinMiner trojan (specifically in a file "lsass.exe" in c:\windows\temp). He says he's able to remove it, but the pop-up keeps re-appearing at every reboot. Strange thing is that a process called svchost.exe keeps using a lot of CPU and memory. As a result my video card fan is switching to a higher speed, even when my system is idle. This only seems to go away when I disable my NIC, but when I restart it again the trojan does the same.

Can someone help me to get rid of this trojan?

Thanks in advance!



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#2 deeprybka

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Posted 22 March 2015 - 12:21 PM

Hi & :welcome: to Bleeping Computer Forums!
My name is Jürgen and I will be assisting you with your Malware related problems. :warrior:

Before we move on, please read the following points carefully: :exclame:
  • My native language isn't English. So please do not use slang or idioms. It could be hard for me to read. Thanks for your understanding.
  • Please read my instructions completely. If there is anything that you do not understand kindly ask before proceeding.
  • Perform everything in the correct order. Sometimes one step requires the previous one.
  • If you have any problems while you are follow my instructions, Stop there and tell me the exact nature of your problem.
  • Do not run any other scans without instruction or Add/ Remove Software unless I tell you to do so. This would change the output of our tools and could be confusing for me.
  • Post all Logfiles as a reply rather than as an attachment unless I specifically ask you. If you can not post all logfiles in one reply, feel free to use more posts.
  • If I don't hear from you within 5 days from this initial or any subsequent post, then this thread will be closed.
  • If I don't reply within 24 hours please PM me!
  • Stay with me. I will give you some advice about prevention after the cleanup process. Absence of symptoms does not always mean the computer is clean.
Step 1

Please run a FRST scan. This will help us diagnose your problem.

frst.pngfrstscan.png
Please download Farbar Recovery Scan Tool and save it to your Desktop.
(If you are not sure which version (32-/64-bit) applies to your system, download and try to start both of them as just the right one will run.)
  • Start FRST with administator privileges.
  • Make sure the option Addition.txt is checked and press the Scan button.
  • When finished, FRST will produce two logs (FRST.txt and Addition.txt) in the same directory the tool was run from.
  • Please copy and paste these logs in your next reply.

regards,
deeprybka
:busy:
Neminem laede, immo omnes, quantum potes, iuva. Arthur Schopenhauer
 
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#3 kingsman

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Posted 22 March 2015 - 02:16 PM

I've added them in attachment.

Attached Files


Edited by kingsman, 22 March 2015 - 02:20 PM.


#4 deeprybka

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Posted 22 March 2015 - 03:09 PM

Hosts: 127.0.0.1		activate.adobe.com
goGMWSt.gifCRACKED SOFTWARE WARNING

Participating in the use of cracked/pirated/keygen software is not only illegal but also a security risk. Were you aware your machine has cracked software installed? I do not approve of nor support illegal software.

Malware authors promote and release cracked software to spread their infections. I strongly recommend you refrain from participating in this activity; your computer will be repeatedly infected otherwise. Simply visiting a cracked software site can result in infection via drive-by exploits of vulnerable software.

Cracked software will make your computer susceptible to a smörgåsbord of malware infections, remote attacks, exposure of personal information, and identity theft. In some instances an infection may cause so much damage to your system that recovery is not possible and the only option is to reformat your Hard Drive and reinstall your Operating System. Please read the following articles for more information.Step 1

frst.pngfrstfix.png

Press thew7.png + R on your keyboard at the same time. Type notepad and click OK.
  • Copy the entire content of the codebox below and paste into the notepad document:
    CloseProcesses:
    Task: {4FDDAC8D-D6F3-4FA5-A950-D9A9A31330FA} - System32\Tasks\Origin => C:\ProgramData\Origin\update.vbe [2015-03-17] () 
    2015-03-17 18:02 - 2015-03-22 19:57 - 01605120 _____ () C:\Windows\Temp\svchost.exe
    C:\ProgramData\Origin\update.vbe 
    C:\Users\Wesley\AppData\Local\Temp\avgnt.exe
    C:\Users\Wesley\AppData\Local\Temp\svchost.exe
    C:\Users\Wesley\AppData\Local\Temp\update.exe
    
  • Click File, Save As and type fixlist.txt as the File Name.
Both files, FRST and fixlist.txt have to be in the same location or the fix will not work!
  • Right-click on FRST.gif icon and select RunAsAdmin.jpg Run as Administrator to start the tool.
    (XP users click run after receipt of Windows Security Warning - Open File).
  • Press the Fix button just once and wait.
  • If for some reason the tool needs a restart, please make sure you let the system restart normally. After that let the tool complete its run.
  • When finished FRST will generate a log on the Desktop, called Fixlog.txt.
Please post it to your reply.

Let's do a final check up:

Step 2


Please downloadesetlogo.pngOnline Scanner and save it to your Desktop.
  • Disable the realtime-protection of your antivirus and anti-malware programs because they might interfere with the scan.
  • Start installer.pngwith administartor privileges.
  • Select the option Yes, I accept the Terms of Use and click on Start.
  • Choose the following settings:
settings.png
  • Click on Start. The virus signature database will begin to download. This may take some time.
  • When completed the Online Scan will begin automatically.
    Note: This scan might take a long time! Please be patient.
  • When completed select Uninstall application on close if you so wish, but make sure you copy the logfile first!
  • Now click on Finish
  • A log filelog.pngis created at logpath.png
    Copy and paste the content of this log file in your next reply.
esetlog.png
Note: Do not forget to re-enable your antivirus application after running the above scan!
eset.gif
regards,
deeprybka
:busy:
Neminem laede, immo omnes, quantum potes, iuva. Arthur Schopenhauer
 
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#5 kingsman

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Posted 23 March 2015 - 02:05 PM

Thanks! I'll remove it immediatly.

 

In attachment the file Fixlog.txt

When I rebooted my machine Avira still displayed the message about the trojan, but my CPU and memory usage returns to normal.

 

When the online scan finishes, I'll post the results and check if Avira's message also disappears.

Attached Files



#6 deeprybka

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Posted 23 March 2015 - 04:19 PM

OK...:)


regards,
deeprybka
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Neminem laede, immo omnes, quantum potes, iuva. Arthur Schopenhauer
 
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#7 kingsman

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Posted 24 March 2015 - 04:29 PM

The online scan still finds a number of threats.

Attached Files

  • Attached File  log.txt   3.04KB   7 downloads


#8 deeprybka

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Posted 24 March 2015 - 05:06 PM

Step 1

Please download tfc.pngTFC (by Oldtimer) and save it to your Desktop.
  • Start TFC.exe with administrator privileges.
  • Close all other running programs.
  • Click on Start.
  • Allow a reboot if one is requested.
Step 2

frst.pngfrstscan.png

Start FRST with administator privileges.
  • Make sure the following option is checked: addition.png
  • Press the Scan button.
  • When finished, FRST will produce two logs (FRST.txt and Addition.txt) in the same directory the tool was run from.
    Please copy and paste these logs in your next reply.

regards,
deeprybka
:busy:
Neminem laede, immo omnes, quantum potes, iuva. Arthur Schopenhauer
 
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#9 kingsman

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Posted 26 March 2015 - 03:06 PM

Thanks!

 

Here are the logs.

Attached Files



#10 deeprybka

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Posted 26 March 2015 - 03:43 PM

The log is looking good. Are you running proxy settings on Firefox on purpose? If not: https://support.mozilla.org/en-US/kb/advanced-panel-accessibility-browsing-network-upda
 
That's it! abklatsch.gif
Your logs look clean to me at the moment. :thumbup2:
We're gonna clean up everything now, close security holes on your computer and in the end I'll provide you with a list of security tips so you hopefully will not need our help anymore in the future.


My help is free for everybody.
If you want to support me fighting against malware or appreciate the assistance you received, then you can consider a donation: btn_donate_SM.gif
Thank you!


Clean Upcleanupm.PNG

Now we remove all the tools we used (including their logs and quarantine folders), restore your settings and delete old and infected system restorepoints:

  • You can uninstall programs that you had to install (e.g. MBAM or ESET Onlinescanner) in the control panel if you so wish.
  • Download delfix.pngDelFix (by Xplode) and save it to your Desktop.
    • Close all running programs and start delfix.exe.
    • Make sure that all available options are checked.
    • Click on Run
    • DelFix should remove all our tools and delete itself afterwards. I don't need the log file.
  • If there is still something left you can delete it manually.

Closing security holes

Many infections happen via drive-by downloads that run unnoticed in the background while the user visits an infected website. To achieve this malware exploits security holes in installed software (e.g. browser or its plugins). Older versions of such software often have lots of known exploitable holes. Therefore it's very important to always keep your software up-to-date.
The following software is outdated. Make sure you remove all old versions and install the current one instead if you need the program:

Adobe Flash Player 16
Java 8 Update 25


 

Tips

I recommend to read and follow the "16 simple and easy ways to keep your computer safe and secure on the Internet" (Link) by Lawrence Abrams.


regards,
deeprybka
:busy:
Neminem laede, immo omnes, quantum potes, iuva. Arthur Schopenhauer
 
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#11 kingsman

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Posted 28 March 2015 - 08:27 AM

The proxy settings were put there by me.

 

Many thanks for your help!

I'll update Adobe Flash and Java right away.



#12 deeprybka

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Posted 28 March 2015 - 08:30 AM

Ok. :)

You are welcome! Take care!
regards,
deeprybka
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#13 deeprybka

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Posted 28 March 2015 - 08:33 AM

It appears that this issue is resolved, therefore I am closing the topic. If that is not the case and you need or wish to continue with this topic, please send me or any Moderator a Personal Message (PM) that you would like this topic re-opened.
regards,
deeprybka
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