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[Windows 10] 2 folders in appdata/local keep reappearing after I delete them.


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#1 DeathByEels

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Posted 13 February 2018 - 11:59 PM

There are 2 folders in my appdata/local folder that keep reappearing. There is a weird process in my task manager called wmdhpcb.exe and it wasn't always there. The 2 appdata folders are called "sbihlew" and "zadhoix." I can't delete them with windows running but I delete them by using a winpe usb and deleting them there. After booting up normal windows, the folders appear after about 2-5 minutes and that process reappears. It isn't quite doing much at least, not much that I can visibly see from the user side of things. But I cant access the folders in any way shape or form and they were not always there. When this started, there was also another folder in my appdata folder that had an exe called "gratefulness" that was indeed a virus. It played ads in the background of my pc and I was able to force delete it and ran hitmanpro, adwcleaner, mbam and a couple other tools to gert rid of it and it hasn't reappeared. Thanks in advance for any help!

 

Attached File  Addition.txt   43.68KB   5 downloads

Attached File  FRST.txt   128.44KB   8 downloads



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#2 Aura

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Posted 14 February 2018 - 10:29 AM

Hi DeathByEels :)

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 BleepingComputer, 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 BleepingComputer'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? :)

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.
  • Right-click on the FRST executable and select Spcusrh.pngRun as Administrator (for Windows Vista, 7, 8, 8.1 and 10 users)
  • Copy/paste the following inside the text area:
    Start::
    CMD: bcdedit.exe /set {bootmgr} displaybootmenu yes
    CMD: bcdedit.exe /set {default} recoveryenabled yes
    End::
    
  • 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

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Security Administrator | Sysnative Windows Update Senior Analyst | Malware Hunter | @SecurityAura
My timezone UTC-05:00 (East. Coast). If I didn't reply to you within 48 hours, please send me a PM.


#3 DeathByEels

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Posted 14 February 2018 - 02:47 PM

Hello Aura. Thank you for your time! Here is the log

Attached File  Fixlog.txt   763bytes   2 downloads



#4 DeathByEels

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Posted 14 February 2018 - 09:46 PM

UPDATE: I just looked in my task manager and caught this. I have never seen this before and I immediately disconnected my ethernet cable and have left it unplugged since then. Does this mean it is collecting data on my pc?

Attached File  Screenshot_1.png   58.47KB   0 downloads



#5 Aura

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Posted 15 February 2018 - 07:17 PM

No, SmartService doesn't steal data from your system, it is a simple Trojan.Clicker.

For the next part, you'll need to download the FRST executable a clean computer, and move them on your USB Flash Drive. That USB can only be inserted in the infected computer if it is either shutdown, or in the Windows RE. Otherwise, the infection will mess with the files on the USB and you'll have to restart.

iO3R662.pngFarbar Recovery Scan Tool (FRST) - Recovery Environment Scan
Follow the instructions below to download and execute a scan on your system with FRST from the Recovery Environment, and provide the logs in your next reply.

Item(s) required:
  • USB Flash Drive (size depend on if you have to create a USB Recovery or Installation media)
  • Another computer (clean of infection)
  • CD/DVD (optional: only needed if you need to create a Recovery or Installation media and your USB Flash Drive is too small)
Preparing the USB Flash Drive
  • Download the right version of FRST for your system from a clean computer:
    • FRST 32-bit
    • FRST 64-bit
      Note: Only the right version will run on your system, the other will throw an error message. So if you don't know what your system's version is, simply download both of them, and the one that works is the one you should be using.
  • Move the executable (FRST.exe or FRST64.exe) on your USB Flash Drive
Boot in the Recovery Environment
  • To enter the Recovery Environment with Windows Vista and Windows 7, follow the instructions below:
    • Restart the computer
    • Once you've seen your BIOS splashscreen (the computer manufacturer logo), tap the F8 key repeatedly until the Advanced Boot Options menu appears
    • Use the arrow keys to select Repair your computer, and press on Enter
    • Select your keyboard layout (US, French, etc.) and click on Next
    • Click on Command Prompt to open the command prompt
      Note: If you can't access the Recovery Environment using the F8 method above, you'll need to create a Windows installation or repair media. It can be made on the computer itself or another one running the same version of Windows as the one you plan to use it on. For more information, check out this tutorial on SevenForums.
  • To enter the Recovery Environment with Windows 8 or Windows 8.1, follow the instructions in this tutorial on EightForums
    Note: If you can't access the Recovery Environment using the method above, you'll need to create a Windows installation or repair media. It can be made on the computer itself or another one running the same version of Windows as the one you plan to use it on. For more information, check out this tutorial.
  • To enter the Recovery Environment with Windows 10, follow the instructions in this tutorial on TenForums
    Note: If you can't access the Recovery Environment using the method above, you'll need to create a Windows installation or repair media. It can be made on the computer itself or another one running the same version of Windows as the one you plan to use it on. For more information, check out this tutorial on TenForums.
  • Once in the Windows RE, plug the USB Flash Drive in the computer
Once in the command prompt
  • In the command prompt, type notepad and press on Enter
  • Notepad will open. Click on the File menu and select Open
  • Click on Computer/This PC, find the letter for your USB Flash Drive, then close the window and Notepad
  • In the command prompt, type e:\frst.exe (for the x64 version, type e:\frst64.exe and press on Enter
  • Note: Replace the letter e with the drive letter of your USB Flash Drive
  • FRST will open
  • Click on Yes to accept the disclaimer
  • Click on the Scan button and wait for the scan to complete
  • A log called FRST.txt will be saved on your USB Flash Drive. Attach it in your next reply

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#6 Aura

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Posted 18 February 2018 - 11:04 AM

Hi DeathByEels,

Are you still with me?

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#7 DeathByEels

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Posted 18 February 2018 - 05:53 PM

Hello yes. I was gone for the weekend. So I ended up having to make a recovery iso usb because I couldn't boot into recovery or even safe mode. But upon booting my usb I took a look and saw that I had actually already creating a backup image that was from about 8 months ago. I ended up formatting and going back to that backup and now there is no sign of any of the issues after having it online for about 2 days. I am going to still run frst from recovery just to be sure but  I believe it is gone for good. I will post later if anything else arises along with the frst logs.



#8 Aura

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Posted 19 February 2018 - 12:43 PM

Alright, I'll be waiting for that FRST log :)

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#9 DeathByEels

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Posted 19 February 2018 - 11:28 PM

Ok so I went ahead and tried to run FRST64.exe in recovery from a usb and from just my pc. They both gave the same error saying something about it not being compatible with this version of windows. Any advice? Im on 10.0.16299 if that makes any difference.



#10 Aura

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Posted 20 February 2018 - 10:49 AM

This is most likely because you downloaded FRST from either the infected computer, or you downloaded it from a clean computer, put plugged the USB in the infected computer before Windows was shut down (and therefore, running), so the infection corrupted the file. You'll need to download it again.

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#11 DeathByEels

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Posted 20 February 2018 - 03:22 PM

Ok here we are finally.

Attached File  FRST.txt   144.07KB   2 downloads



#12 Aura

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Posted Yesterday, 11:04 PM

Sorry for the delay. That log looks clean, no traces of SmartService.

How's your system behaving right now?

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