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xxrei42xx

Quarantining Trojan.Agent and Trojan.Yelloader Failure

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Hi,

MBAM has failed to quarantine/remove three identified trojan viruses several times today.  I checked some sources and saw that it was recommended that I try MBAM Anti-Rootkit Beta to solve this, so I installed and ran it.  It located the files and I selected to clean them and restarted my laptop, but if I run Anti-Rootkit or MBAM again it still detects the same files and MBAM still fails to quarantine them.  I also tried running the scans and quarantining from Safe Mode, but that did not change the results. 

Any suggestions?

Addition.txt

FRST.txt

Threat Scan Log.txt

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Hello xxrei42xx and welcome to Malwarebytes,

You have smartservice infection, to remove that infection you need access to a spare clean PC and a USB flash drive, 4GB or above.. If you have those available do the following:

Boot up your spare PC plug in the flash drive, navigate to that drive, right click on it direct and select format. Quick option is adequate...

Next,

On that same PC downoad and save FRST to same Flash drive, make sure to get the correct version, if you are unsure d/l and save both, only the correct one will run. Do not plug Flash Drive into sick PC until booted to Recovery Environment.

http://www.bleepingcomputer.com/download/farbar-recovery-scan-tool/

Next,

Boot sick PC to Recovery Environment, if you are unsure of that action have a read at the following link, maybe bookmark for future reference...

https://www.tenforums.com/tutorials/2294-boot-advanced-startup-options-windows-10-a.html

Next,

From the Windows 10 Tutorial you should get access to the Advanced Startup Options at boot for Windows 10

user posted image


From that window select "Troubleshoot"


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From the next window select "Advance Options"


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From that Window select "Command Prompt"

Ensure to plug the flash drive into a USB port... You should now be in Recovery Environment with the Command Prompt Window open......

Continue with the following:
 
  • Select Command Prompt
  • In the command window type in notepad and press Enter.
  • The notepad opens. Under File menu select Open.
  • Select "Computer" or "My PC" and find your flash drive letter and close the notepad.
  • In the command window type E:\frst64 or E:\frst depending on your version. Press Enter Note: Replace letter E with the drive letter of your flash drive.
  • The tool will start to run.
  • When the tool opens click Yes to disclaimer.
  • Press Scan button.
  • It will make a log (FRST.txt) on the flash drive. Please copy and paste it to your reply.


Thank you,

Kevin..

 

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I have the flashdrive with FRST on it prepared, but I can't seem to get the laptop to boot into Recovery Environment, it just restarts.  I tried all seven methods the article mentioned but none were successful.  I can get the computer to boot into Safe Mode though, would that help anything?

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Safemode does not help, do not use the flash drive on sick PC until Recovery Environment is open...

You`ve already ran FRST on sick PC, try the following:

Start FRST again, copy/paste the following quoted list inside the text area. Once done, click on the Fix button. A file called fixlog.txt should appear on your desktop. Attach it in your next reply.

Quote

Start::
CMD: bcdedit.exe /set {bootmgr} displaybootmenu yes
CMD: bcdedit.exe /set {default} recoveryenabled yes
End::

If that is successful you should be able to access Recovery Environment...

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Here's the fixlog, I'll try to boot into Recovery Environment again now.

Fixlog.txt

*edit* Still can not boot into Recovery Environment, my laptop just restarts.

Edited by xxrei42xx

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Which version of Windows is on your spare PC, is it the same as sick PC... "W10" if so do the following:

Go to your spare PC, plug in Flash drive. Open the search function bottom left hand corner of the Desktop type in or copy/paste create recovery drive hit enter....

In the new window UNCheck "Back up system files to recovery drive" from there click "Next" from there just follow the prompt, The flash drive will be formatted before the RD is created.

When that is complete you will need to add FRST again to same flash drive... https://www.bleepingcomputer.com/download/farbar-recovery-scan-tool/

We now need to boot the infected PC direct to the Recovery Environment which is on the Flash Drive... It will may be necessary to change the boot order in the infected PC to boot from the USB Flash drive: https://craftedflash.com/info/how-boot-computer-from-usb-flash-drive

After booting to the Recovery Environment select the correct keyboard, from the next window select "Trouble Shoot" then "Command Prompt"

Continue with the following:
 
  • In the command window type in notepad and press Enter.
  • The notepad opens. Under File menu select Open.
  • Select "Computer" or "My PC" and find your flash drive letter and close the notepad.
  • In the command window type E:\frst64 or E:\frst depending on your version. Press Enter
  • Note: Replace letter E with the drive letter of your flash drive.
  • The tool will start to run.
  • When the tool opens click Yes to disclaimer.
  • Press Scan button.
  • It will make a log (FRST.txt) on the flash drive. Please copy and paste it to your reply.

Thanks,

Kevin.

Edited by kevinf80
typing error

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The second PC is running Windows 8 and can’t be updated to Windows 10, is creating the recovery drive still possible?

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Yes create a recovery drive on windows 8,  Windows 8 includes an option named “Copy the recovery partition to the recovery drive” do not use that option, all we want on the USB flash drive is the Recovery Environment tools. Add FRST when complete...

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That has not produced a log correctly, can you format the flash drive again on spare PC, then reload recovery drive and FRST. Do not plug into sick PC until booted to Recovery Environment..

Try again as you did previously and post a fresh log..

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Surface Pro only has one USB input, am I supposed to format the recovery drive on the flashdrive, plug it in and boot the laptop into Recovery environment, then unplug the usb, wipe it, and load FST onto it and plug it back in? I'm sorry, I feel like I'm missing something here.

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I tried following the directions again of usb booting into recovery mode and then running frst through the command prompt, but the log file it gave me is identical to the one you said wasn’t produced correctly.

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I’ve never done it before but I can try, if you tell me what the settings should be for it then I can see if it’ll work.

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I created the usb per your specifications (using RUFUS and the ISO and then putting FRST on it too) but the computer will not boot from the flashdrive now, the laptop starts normal windows. 

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Ok we are not making much progress, see if you can follow these instructions, is another way to tackle smartservice infection:

If your computer does not have the Windows Recovery Environment installed and available you can use the following method to run the Recovery Environment from a bootable USB disk.

NOTE: This USB disk needs to be created from a clean computer. You cannot use an infected computer for this process

NOTE: An 8GB USB 2.0 stick is required or at least recommended. In some cases a USB 3.0 disk can be used but some computers have issues booting from USB 3.0 disks.

Example drive (no endorsement implied, example only) - This drive example has not been tested by me. It is an older 2015 model with many good reviews though.
Amazon: Kingston 8GB DataTraveler 101 G2 USB 2.0 Flash Drive (DT101G2/8GBZ)
NewEgg: Kingston 8GB DataTraveler 101 G2 USB 2.0 Flash Drive (DT101G2/8GBZ)


STEP 1
Download a Windows 10 ISO image from Microsoft.

Method A: Using the Microsoft Media Creation Tool
https://www.microsoft.com/en-gb/software-download/windows10
Download the Media Creation Tool: https://go.microsoft.com/fwlink/?LinkId=691209

Follow the instructions displayed on the tool to download the Windows 10 ISO image.

In my testing I was not prompted for a license key to download the latest Windows 10 ISO image.
At the time of this writing 2017/12/21 there was only one ISO image offered. Windows 10

32-bit x86  or  64-bit x64

Note: You need to run the version compatible with your system.
You can check here if you're not sure if your computer is 32-bit or 64-bit
 

Method B: If Method A: above is not working for you then you can try the following method
Microsoft Windows and Office ISO Download Tool (this is not an authorized Microsoft tool, but appears to be legal)
https://www.heidoc.net/joomla/technology-science/microsoft/67-microsoft-windows-and-office-iso-download-tool
Download: https://www.heidoc.net/php/Windows%20ISO%20Downloader.exe

STEP 2
If you were unable to use the Windows Media Creation Tool in STEP 1 to create a USB disk then you can use this tool to burn the Windows 10 ISO image from STEP 1 above.

Download the Windows USB/DVD Download Tool from Gitbub and save to your computer.
English version: https://github.com/mantas-masidlauskas/wudt/raw/master/Downloads/Windows7-USB-DVD-Download-Tool-Installer-en-US.exe

Then install the Windows USB/DVD Download Tool and run it to burn a bootable USB disk from the ISO image. Browse to the location where you saved the Windows 10 ISO image in STEP 1
Note: This tool should work on XP, Vista, Windows 7, or Windows 10 - it is simply used to make a bootable USB disk. Remember, all of this needs to be done on a clean computer.

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STEP 3
Please download the Farbar Recovery Scan Tool and save it to your desktop or other location you know where it's saved to. Then copy it to the USB disk you just created.

Note: You need to run the version compatible with your system.
You can check here if you're not sure if your computer is 32-bit or 64-bit

STEP 4
Shut down the infected computer. Do Not insert the USB disk you created until the infected computer has been shut down.
Once the computer is shut down then insert the newly created Windows 10 USB disk into the infected computer and power it back on and press the appropriate key to bring up the boot menu. The link below will help show you which key for various computers manufacturers is used to bring up the boot menu. Most will be either USB or UEFI depending on hardware and settings. If the computer boots up into the Normal Windows instead of the USB stick it may become infected and need to be completely redone again. Make sure you select the correct boot option.

How to Boot Your Computer from a USB Flash Drive

STEP 5
Once the computer starts to boot up from the USB disk, follow the screens and directions below.

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You will need to open NOTEPAD.EXE to help find out which drive is your Windows drive and which drive is your USB disk drive you just created

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RRI6og4.jpg

For the more advanced user you could also use DISKPART to help locate which drive is mapped to your USB disk. In most cases the USB disk will be either D: or E: but depending on hardware the drive could be a much higher level such as H: or higher.

Example only - your hardware will look different

DISKPART> list volume
	  Volume ###  Ltr  Label        Fs     Type        Size     Status     Info
  ----------  ---  -----------  -----  ----------  -------  ---------  --------
  Volume 0     Z                       DVD-ROM         0 B  No Media
  Volume 1     C                NTFS   Partition    931 GB  Healthy    System
  Volume 2     Q   SEA-USB-4.0  NTFS   Partition   3725 GB  Healthy
  Volume 3     D                NTFS   Removable   7636 MB  Healthy


Go back to the DOS Command Prompt (if you used DISKPART type in Exit and press the Enter key) and type in the following and press the Enter key.

CD /D  D: (or E: or whichever drive letter the USB stick is on)

Then type in CD\
and press the Enter key to get to the root or top of the USB disk.

Then type in FRST   or   FRST64  (depending on which version your computer uses) and click the Scan button.

A log called FRST.txt will be saved on your USB Flash Drive. Attach it in your next reply.

Thanks,

Kevin...

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Thanks

 

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