Win32:BitCoinMiner-CA trojan

Viruses and worms
1

Hi. I have exactly the same problem with this guy here http://forum.avast.com/index.php?topic=124164.0
I’ve already tried mbam and mbar with no result. Here is a screen of avast blocking the trojan horse
http://img716.imageshack.us/img716/4271/trojann.png

2

Could you follow the steps here please http://forum.avast.com/index.php?topic=53253.0

3

Here are my logs

4

…and aswMBR.txt

5

essexboy is notified…
you are a bit late, so essexboy is on bed now, check back tomorrow. :slight_smile:

6

post_edit:

Ups, just now I saw colleague essexboy has already taken over this case. :slight_smile:

7

:slight_smile: Hi lets get at it

Download and Install Combofix

Download ComboFix from one of the following locations:
Link 1
Link 2

VERY IMPORTANT !!! Save ComboFix.exe to your Desktop

  • IMPORTANT - Disable your AntiVirus and AntiSpyware applications, usually via a right click on the System Tray icon. They may otherwise interfere with our tools. If you have difficulty properly disabling your protective programs, refer to this link here

[*]Double click on ComboFix.exe & follow the prompts.
[*]Accept the disclaimer and allow to update if it asks

http://img.photobucket.com/albums/v706/ried7/NSIS_disclaimer_ENG.png

http://img.photobucket.com/albums/v706/ried7/NSIS_extraction.png

[*]When finished, it shall produce a log for you.
[*]Please include the C:\ComboFix.txt in your next reply.

Notes:

  1. Do not mouse-click Combofix’s window while it is running. That may cause it to stall.
  2. Do not “re-run” Combofix. If you have a problem, reply back for further instructions.
  3. If after the reboot you get errors about programmes being marked for deletion then reboot, that will cure it.

Please make sure you include the combo fix log in your next reply as well as describe how your computer is running now

8

I got an error while Combofix was running (PEV.exe Error) however the scan completed.
I think nothing changed, the trojan is still there.

9

OK I can see the reason for that

Download the latest version of TDSSKiller from here and save it to your Desktop.

[*]Doubleclick on TDSSKiller.exe to run the application

https://dl.dropbox.com/u/73555776/tdss%20start.JPG

[*]Then click on Change parameters.

https://dl.dropbox.com/u/73555776/tdss%20Change%20param.JPG

[*]Check the boxes beside Verify Driver Digital Signature and Detect TDLFS file system, then click OK.

[*]Click the Start Scan button.

[*]If a suspicious object is detected, the default action will be Skip, click on Continue.

https://dl.dropbox.com/u/73555776/tdss%20threat.JPG

[*]If malicious objects are found, they will show in the Scan results and offer three (3) options.
[*]Ensure Cure is selected, then click Continue => Reboot now to finish the cleaning process.

[*]Get the report by selecting Reports

https://dl.dropbox.com/u/73555776/tdss%20report.JPG

[*]Note: If Cure is not available, please choose Skip instead, do not choose Delete unless instructed.

Please copy and paste its contents on your next reply.

10

3 threats found but without cure button.

11

OK lets see if we can find a spare copy of Atapi.sys

Please run OTL and paste the following in the custom scans and fixes box

/md5start
atapi.*
/md5stop

Then press Run Scan
Attach the resultant log please

12

Do you need extras log? I didn’t find it.

13

it is only created at first OTL run and is only extra tech info and usually not needed

14

Intriguing Combofix reports that Atapi is infected however, both TDSSKiller and OTL MD5 scan report no problems

Please delete the current copy of combofix from your desktop
Then download and run a fresh copy please

Link 1
Link 2

15

Forum virus removal is not my field and this is essexboys show here…I just glanced over those txt files…

http://www.cute-factor.com/images/smilies/onion/91eea40f.gif

Sometimes when you are dealing with an undetectable rootkit you may find that you’ve been fooled and you aren’t dealing with a rootkit at all just an amateur virus that you missed because you were searching so hard for a rootkit. I could be way off base here

16

OK I downloaded it again. Here is the log:

17

OK that’s better lets now kill the main file

  1. Close any open browsers.

  2. Close/disable all anti virus and anti malware programs so they do not interfere with the running of ComboFix.

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

File:: c:\windows\SysWow64\msitsc32.dll

Registry::
[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
“MSIDLL”=-

Save this as CFScript.txt, in the same location as ComboFix.exe

http://img.photobucket.com/albums/v666/sUBs/CFScriptB-4.gif

Refering to the picture above, drag CFScript into ComboFix.exe

When finished, it will produce a log for you at C:\ComboFix.txt which I will require in your next reply.

18

I made some restarts and scans with mbam and the system seems clean now.
Avast popups stopped. Many thanks for your help. :slight_smile:

19

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:

Run AdwCleaner and press uninstall

Remove ComboFix
[*]Hold down the Windows key + R on your keyboard. This will display the Run dialogue box
[*]In the Run box, type in ComboFix /Uninstall
(Notice the space between the “x” and “/”)
then click OK

http://i1224.photobucket.com/albums/ee362/Essexboy3/Misc%20screen%20shots/CF_Uninstall-1.jpg

[]Follow the prompts on the screen
[]A message should appear confirming that ComboFix was uninstalled

Run OTL and hit the cleanup button. It will remove all the programmes we have used plus itself.

Clear Restore Points

Go Start > All Programmes > Accessories > System tools
Right click Disc Cleanup and select run as administrator
When it pops up at the first prompt select OK after it has done some calculations the tabs will appear
Select More Options tab
Press Sytem Restore and Shadow Copies Cleanup button

https://dl.dropbox.com/u/73555776/disc%20clean.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 and 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)

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

http://img233.imageshack.us/img233/7729/mbamicontw5.gif
Malwarebytes.

Update and run weekly to keep your system clean

Download and install FileHippo update checker and run it monthly it will show you which programmes on your system need updating and give a download link

If you use on-line banking then as an added layer of protection install Trusteer Rapport

It is critical to have both a firewall and anti virus to protect your system and to keep them updated. To keep your operating system up to date visit
[*]Microsoft Windows Update

To learn more about how to protect yourself while on the internet read our little guide How did I get infected in the first place ?Keep safe :wave: