Author Topic: Virus in assembly\temp\U\80000032.@ and kwrd.dll and Win32:DNSChanger- VJ[Trj]  (Read 18013 times)

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Offline acr

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Hello all,
I've been dealing with a virus recently. I've run both Avast and MBAM and it picks up either:

Object - C:Windows\assembly\tmp\U\80000032.@
Infection - Win32:DNSchanger-VJ[Trj]

or


"Original File: kwrd.dll
Original Folder: c:\windows\assembly\tmp
Virus Description: Win32:Malware-gen"

I've run Avast (all scans and the boot-time scan) and MBAM and they keep the virus at bay and my laptop actually works fine. The only thing is that the virus keeps coming back and Avast keeps blocking it. I'm trying to find the source but from what I have read on the forums it may be the ZeroAccess rootkit or conserv.dll although I am not getting redirected to any weird website at all. I use Mozilla Firefox and rarely Google Chrome on Windows 7 Pro.

My laptop works fine, I just want to delete whatever is re-spawning the virus.

Attached are the OTL and aswMBR logs.

The help is appreciated. Thank you.

Offline DavidR

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Unfortunately essexboy wild be sleeping now, just after 1:0am in the UK now, so he should be back on-line later today.
WinXP ProSP3/ Core2Duo E8300/ 4GB Ram/ avast! free 18.5.2342/ Firefox ESR, uBlock Origin, uMatrix/ MailWasher Pro7.11.0/ DropMyRights/ WinPatrol+/ Drive Image 7.1/ SnagIt 10.0/ avast! mobile security
Windows 10 Home 64bit/ Acer Aspire F15/ Intel Core i5 7200U 2.5GHz, 8GB DDR4 memory, 256GB SSD, 1TB HDD/ avast! free 19.4.2374/ WinPatrol+/ Firefox, uBlock Origin, uMatrix/ MailWasher Pro7.11.0/ WinPatrol+/

Offline essexboy

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This is the conserv infection so I will need to use a tool that can fix it properly

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




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


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

Offline acr

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Here's the combofix og made after it instaed. I'm on my roommate's computer and severa of the eys are not woring.

I cannot run any programs due to some iega operation on a registry ey that's been mared for deetion. Is that because of Combofix?

I disabed a my antiviruses for combofix to do its thing.

Offline essexboy

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Reboot the system and that will go away, combofix has not released the registry properly

Offline essexboy

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Once rebooted can you let me know what problems remain

Offline acr

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No problems remain, things are running as normal. I'm back on my computer and Avast started up normally. It hasn't detected anything so far even when I started up Mozilla Firefox which was one of the times that Avast would block the virus from doing anything.

Offline essexboy

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If you are happy tomorrow let me know and I will remove my tools  ;D

Offline acr

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I will. I'll run Avast and MBAM scans just to ensure a clean bill of health.

Thank you essexboy.

Offline acr

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MBAM scan is clean, Avast scan is clean. Things look good. Thanks for the assist

Offline essexboy

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OK I will give the cleanup now - but monitor for the next day or so

Subject to no further problems   :)

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 OTL
  • Under the Custom Scans/Fixes box at the bottom, paste in the following
    Quote
    :Commands
    [resethosts]
    [purity]
    [emptytemp]
    [EMPTYFLASH]
    [Reboot]
  • Then click the Run Fix button at the top
  • Let the program run unhindered, reboot the PC when it is done
.
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
    .

    .
  • 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. 
.
We will now confirm that your hidden files are set to that, as some of the tools I use will change that
  • Click Start.
  • Open My Computer.
  • Select the Tools menu and click Folder Options.
  • Select the View Tab.
  • Under the Hidden files and folders heading select Do not show hidden files and folders.
  • Click Yes to confirm.
  • Click OK.
.
 
Your Java is out of date. Older versions have vulnerabilities that malware can use to infect your system.
Please follow these steps to remove older version of Java components and upgrade the application.
.
 Upgrading Java:
  • Go to this site  and click Do I have Java
  • It will check your current version and then offer to update to the latest version
.
SPRING CLEAN
.
To manually create a new Restore Point
 
  • Go to Control Panel and select System
  • Select System
  • On the left select System Protection and accept the warning if you get one
  • Select System Protection Tab
  • Select Create at the bottom
  • Type in a name i.e. Clean
  • Select Create
.
Now we can purge the infected ones
  • GoStart > All programs > Accessories > system tools
  • Right click Disc cleanup and select run as administrator
  • Select Your main drive and accept the warning if you get one
  • For a few moments the system will make some calculations
  • Select the More Options tab
  • In the System Restore and Shadow Backups select Clean up
  • Select Delete on the pop up
  • Select OK
  • Select Delete
.
Now that you are clean, to help protect your computer in the future I recommend that you get the following free programmes:

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
.
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
.
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:

Offline acr

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Did everything and thanks for the assist again. 

Offline essexboy

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My pleasure keep safe

Offline warevely

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I followed your steps for using ComboFix..............Can we say "oh Yeah Baby" ? Worked when nothing else would. Thank you so much.

Offline qwang925

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You rock man!! I registered just to thank you big fella!!

OK I will give the cleanup now - but monitor for the next day or so

Subject to no further problems   :)

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 OTL
  • Under the Custom Scans/Fixes box at the bottom, paste in the following
    Quote
    :Commands
    [resethosts]
    [purity]
    [emptytemp]
    [EMPTYFLASH]
    [Reboot]
  • Then click the Run Fix button at the top
  • Let the program run unhindered, reboot the PC when it is done
.
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
    .

    .
  • 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. 
.
We will now confirm that your hidden files are set to that, as some of the tools I use will change that
  • Click Start.
  • Open My Computer.
  • Select the Tools menu and click Folder Options.
  • Select the View Tab.
  • Under the Hidden files and folders heading select Do not show hidden files and folders.
  • Click Yes to confirm.
  • Click OK.
.
 
Your Java is out of date. Older versions have vulnerabilities that malware can use to infect your system.
Please follow these steps to remove older version of Java components and upgrade the application.
.
 Upgrading Java:
  • Go to this site  and click Do I have Java
  • It will check your current version and then offer to update to the latest version
.
SPRING CLEAN
.
To manually create a new Restore Point
 
  • Go to Control Panel and select System
  • Select System
  • On the left select System Protection and accept the warning if you get one
  • Select System Protection Tab
  • Select Create at the bottom
  • Type in a name i.e. Clean
  • Select Create
.
Now we can purge the infected ones
  • GoStart > All programs > Accessories > system tools
  • Right click Disc cleanup and select run as administrator
  • Select Your main drive and accept the warning if you get one
  • For a few moments the system will make some calculations
  • Select the More Options tab
  • In the System Restore and Shadow Backups select Clean up
  • Select Delete on the pop up
  • Select OK
  • Select Delete
.
Now that you are clean, to help protect your computer in the future I recommend that you get the following free programmes:

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
.
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
.
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: