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This RegAsm thing (looks like CMD prompt) keeps popping up randomly...


DBVS
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Go to solution Solved by Maurice Naggar,

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Screenshot attached below, it's really really annoying, any help is greatly appreciated. 

I've tried looking in my file directory listed there, nothing.

I've tried looking up the name of the file online, nothing.

I really am struggling to find anything on it which leads me to believe it's malware unfortunately. 

Capture.JPG

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Hello @DBVS

I need the reports from the steps above so that I can see details about what is going on.  I will guide you to getting things back to normal and to insure there is no malware left.

If just by any chance you are using Reddit or any other general-public bulletin board, please only stick here with us. The sub-folder ubhawbj is suspicious, plus there ought not be a loose invocation of Net framework like shown on your screenshot. I await your reports so that thereafter we can start on fixes.  Patience & persistence are key here.

Edited by Maurice Naggar
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Please do not be using other apps or web browsers during these next procedures. Only use web browser for purpose to get to this forum.

[    1    ]

As a next basic step, Please  make very very sure to  set File Explorer to SHOW ALL folders, all files, including Hidden ones.  Use OPTION ONE or TWO of this article

https://www.tenforums.com/tutorials/7078-turn-off-show-all-folders-windows-10-navigation-pane.html

[    2    ]

We will use FRST64.exe  on D:\Desktop folderr to run a custom script.    The system will be rebooted after the script has run.

This custom script is for  DBVS  only / for this machine only.

This custom script has some specific things, plus some general aspect to help the system overall.

NOTE-1:  This script will  run a scan using System File Checker to check that all Microsoft operating system files are valid and not corrupt and attempt to correct any invalid files.  It will also run the Windows 10 DISM to check the system integruty.

NOTE-2:  It will delete two (2) suspicipus sub-folders

C:\Users\PC\AppData\Roaming\ubhawgj
C:\Users\PC\AppData\Roaming\fufvjjj

NOTE-3: As part of this fix all temporary files will be removed. If you have any open web pages that have not been bookmarked please make sure you bookmark them now as all open applications will be automatically closed. Also, make sure you know the passwords for all websites as cookies will also be removed. The use of an external password manager is highly recommended instead of using your browser to store passwords.

The following directories are emptied:

  • Windows Temp
  • Users Temp folders
  • Edge, IE, FF, Chrome,  and Opera caches, HTML5 storages, Cookies and History
  • Recently opened files cache
  • Flash Player cache
  • Java cache
  • Steam HTML cache
  • Explorer thumbnail and icon cache
  • Recycle Bin

Important: items are permanently deleted. They are not moved to quarantine. If you have any questions or concerns please ask before running this fix.

Please be sure to Close any open work files, documents,  any apps you started yourself  before starting this.

 
If there are any CD / DVD / or USB-flash-thumb or USB-storage drives attached,  please disconnect any of those.

Please save the (attached file named) FIXLIST.txt   to the  D:\Desktop  folder   

Fixlist.txt


Start the Windows Explorer and then, to the D drive then to D:\Desktop


RIGHT click on  FRST64.exe    and select RUN as Administrator and allow it to proceed.  Reply YES when prompted to allow to run.
  to run the tool. If the tool warns you the version is outdated, please download and run the updated version.
IF Windows prompts you about running this, select YES to allow it to proceed.

IF you get a block message from Windows about this tool......
click line More info information on that screen
and click button Run anyway on next screen.

on the FRST window:
Click the Fix button just once, and wait.

frst-fix.jpg.f6a25291b39a03d418acc9a3b7136900.jpg

 

PLEASE have lots and lots of patience when this starts. You will see a green progress bar start. Lots of patience. 
If you receive a message that a reboot is required, please make sure you allow it to restart normally.
The tool will complete its run after restart.
When finished, the tool will make a log ( Fixlog.txt) in the same location from where it was run.

Please attach the FIXLOG.txt with your next reply later, at your next opportunity   


Please know this will do a Windows Restart.   Just let it do its thing.  We will do more later, to do additional scans.   Persistence & patience is our motto.

Be real sure to tell me if the "odd" / weird command window is then gone after this section completes.

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Hello, I've noticed that when I boot up my system, the unwanted program will run and close as usual, good news though, it didn't do that after the Farbar (Fixlog attached) start :), I do have some questions though, some out of sheer curiosity...

About password managers, why do you not recommend the browser password manager, which external one would you personally recommend (besides Lastpass)?

About the unwanted program, what do you think it was doing on my PC, or rather what was it's intended purpose? 

When it comes to the log files I sent you initially, what did you find in them specifically that came off as red flags? (Just kind of curious as I haven't seen that type of thing in a while)

 

Thanks

Fixlog.txt

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I will need to delay answering some of your newest questions for later.  And I will relay to you some good safety tips later.  But generally speaking, keeping passwords saved outside of any browser is safer ( plus, in cases where a browser goes belly-up, its best to keep passwords in safer place).

What this last custom fix run has exposed is a serious situation whereby Microsoft Defender antiirus was severly reduced in its monitoring.  The whole Windows folder as well as some 7 other folders were excluded from monitoring by the antivirus.  This all needs to be fixed as well as follow-up runs to do more additional scans.

This next part is just one part only.  More to be done later.

FIRST I need for you to Delete the last file FIXLIST.txt   on D:\Desktop

>

We will use FRST64.exe  on D:\Desktop folderr to run a custom script.    The system will be rebooted after the script has run.

This custom script is for  DBVS  only / for this machine only.

This custom script has some specific things, plus some general aspect to help the system overall.

NOTE-1:  This script will  run a scan using System File Checker to check that all Microsoft operating system files are valid and not corrupt and attempt to correct any invalid files.  The new run is a must do.

NOTE-2:  It will delete the excluded folders & excluded process from the Microsoft Defender antivirus exclusion list.  It will also run ( attempt to run) a Quick scan with Microsoft Defender.

 

Please be sure to Close any open work files, documents,  any apps you started yourself  before starting this.

 
If there are any CD / DVD / or USB-flash-thumb or USB-storage drives attached,  please disconnect any of those.

Please save the (attached file named) FIXLIST.txt   to the  D:\Desktop  folder   

Fixlist.txt


Start the Windows Explorer and then, to the D drive then to D:\Desktop


RIGHT click on  FRST64.exe    and select RUN as Administrator and allow it to proceed.  Reply YES when prompted to allow to run.
  to run the tool. If the tool warns you the version is outdated, please download and run the updated version.
IF Windows prompts you about running this, select YES to allow it to proceed.

IF you get a block message from Windows about this tool......
click line More info information on that screen
and click button Run anyway on next screen.

on the FRST window:
Click the Fix button just once, and wait.

frst-fix.jpg.f6a25291b39a03d418acc9a3b7136900.jpg

 

PLEASE have lots and lots of patience when this starts. You will see a green progress bar start. Lots of patience. 
If you receive a message that a reboot is required, please make sure you allow it to restart normally.
The tool will complete its run after restart.
When finished, the tool will make a log ( Fixlog.txt) in the same location from where it was run.

Please attach the FIXLOG.txt with your next reply later, at your next opportunity   


Please know this will do a Windows Restart.   Just let it do its thing.  We will do more later, to do additional scans.   Persistence & patience is our motto.

Be real sure to tell me if the "odd" / weird command window is then gone after this section completes.

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Thanks for the report.  Here is the next scan procedure.

I suggest a new scan for viruses & other malware.

The Microsoft Safety Scanner is a free Microsoft stand-alone virus scanner that can be used to scan for & remove malware or potentially unwanted software from a system. 

The download links & the how-to-run-the tool are at this link at Microsoft 

https://docs.microsoft.com/en-us/windows/security/threat-protection/intelligence/safety-scanner-download

 

Look on Scan Options & select FULL scan.

Then start the scan. Have lots of patience. It may take several hours.

  • Oce you see it has started, take a long long break;  walk away.  Do not pay credence if you see some intermediate early flash messages on screen display.  The only things that count are the End result at the end of the run.

 

Let me know the result of this.    This is likely to run for many hours   ( depending on number of files on your machine & the speed of hardware.)

The log is named MSERT.log  

the log will be at  

Windows\debug\msert.log

Please attach that log with your reply.

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That is excellent. No malware found / reported.

Please do this special  search. 

There is the FRST64.exe  tool on the D:\Desktop folder. We will use that to do a search.

Find & then start FRST64

 

Type the following ( better yet, use COPY  then Paste)  into the search box exactly as shown  then press the Search Files button 

SearchAll: ubhawg

Please wait while the program searches for all entries relating to this , when done a  search.txt  log will be saved to the desktop. Please attach this log to your next reply. 

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Alright Maurice, I've done the search and to be honest I'm not surprised by the results, I've seen these files in their specific locations before as I was looking for the root of this program but even after I deleted it it didn't do much (this is before I made this forum post) 

 

The ubhawgj.log:

1,"fusion","GAC",0
1,"WinRT","NotApp",1
 

I've never seen the .xBAD format though, but it does look to be quarantined. 

Search.txt

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Thank you. Indeed, it has very short content. There is nothing there that sheds any light as to what was the original root source of it. But I am inclined to think the-original-issue-at-hand relates to either a failed setup, or a failed or incomplete cleanup of some sort.

Now then, if the "command-window with .Net Framework Assembly Registration" does still show....then

I would suggest that you review all applications that are automatically started with Windows  and reduce them to only those that are a absolute must.

How to perform a clean boot in Windows
https://support.microsoft.com/en-us/help/929135/how-to-perform-a-clean-boot-in-windows

Do jot down to document what you turn off.  When done with the reduction, then do a Windows Restart.  and after the Restart, keep an eye out to see if the same command-prompt-window shows up.

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Alright will do, but to be honest I haven't noticed the program popping up recently, I will keep an eye out for it though. I don't have anything that boots up automatically (I think) but I will make sure to disable any that are not certified from Microsoft.

It hasn't popped up. 

Thank you for the help. 

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Keep observing over the next few days.  Like 3 to 4 days or so.

And a word of caution and clarification as to the types of apps on auto-start-with Windows that I was referring to.

I meant to trim down and not auto-start apps by outside companies that are NOT Windows or Microsoft or  Malwarebytes or 'security' related.

Specifically things like STEAM

DISCORD

EpicGamesLauncher

MEDAL   ( I take it that is some sort of game)

any 'torrent' or community-file-share app.

If there is no 'loose command-prompt-window' thru Friday, then we can then close out the case.

Cheers.    😉

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You are very welcome. I am glad to have worked with you.

We can proceed with cleanup of tools we used.

To remove the FRST64 tool & its work files, do this. Go to your D:\Desktop folder. Do a RIGHT-click on FRST64.exe & select RENAME & then change it to

UNINSTALL.exe

.
Then run that ( double click on it) to begin the cleanup process.

Delete msert.exe

Any other download file I had you download, you may delete. I wish you all the best. Stay safe.
Consider using PatchMyPC, keep all your software up-to-date - https://patchmypc.com/home-updater#download

Sincerely.

Maurice

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Glad we could help.

If you need this topic reopened, please send a Private Message to any one of the moderating team members. Please include a link to this topic with your request.

This applies only to the originator of this thread. Other members who need assistance please start your own topic in a new thread.

Please review the following to help you better protect your computer and privacy Tips to help protect from infection

Thank you

 

 

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