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Executed Word Macro Malware - Undetected


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I received a Zip file from a known source today and accidentally enabled a macro after opening the word document. I submitted this file to research forum and they confirmed the payload is not detectable by Malwarebytes at the moment. See link to that post here:

 

They suggested that I reach out on this forum for assistance removing the item. I can live without my personal PC for a bit. What is the normal turn around for malwarebytes to push updates for previously undetected malware once identified?

 

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  • Root Admin

Hello @Virusalerter

We do not detect Office document macros. We do detect payloads though.

We can help you scan and if needed clean the computer if any damage did happen. I'm officially off until Monday but I'll try to assist you over the weekend if possible

 

Please run the following steps and post back the logs as an attachment when ready.
Temporarily disable your antivirus or other security software first. Make sure to turn it back on once the scans are completed.
Temporarily disable Microsoft SmartScreen to download software below if needed. Make sure to turn it back on once the scans are completed.
If you still have trouble downloading the software please click on Reveal Hidden Contents below for examples of how to allow the download.

 

Spoiler
 
 
 
 
Spoiler

When downloading with some browsers you may see a different style of screens that may block FRST from downloading. The program is safe and used hundreds of times a week by many users.

Example of Microsoft Edge blocking the download

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STEP 01

  • If you already have Malwarebytes installed then open Malwarebytes and click on the Scan button. It will automatically check for updates and run a Threat Scan.
  • If you don't have Malwarebytes installed yet please download it from here and install it.
  • Once installed then open Malwarebytes and select Scan and let it run.
  • Once the scan is completed make sure you have it quarantine any detections it finds.
  • If no detections were found click on the Save results drop-down, then the Export to TXT  button, and save the file as a Text file to your desktop or other location you can find and attach that log on your next reply.
  • If there were detections then once the quarantine has completed click on the View report button, Then click the Export drop-down, then the Export to TXT  button, and save the file as a Text file to your desktop or other location you can find and attach that log on your next reply.
  • If the computer restarted to quarantine you can access the logs from the Detection History, then the History tab. Highlight the most recent scan and double-click to open it. Then click the Export drop-down, then the Export to TXT  button, and save the file as a Text file to your desktop or other location you can find and attach that log on your next reply.
  • If Malwarebytes won't run then please skip to the next step and let me know in your next reply that the scanner would not run.

STEP 02

Please download AdwCleaner by Malwarebytes and save the file to your Desktop.

  • Double-click to run the program
  • Accept the End User License Agreement.
  • Wait until the database is updated.
  • Click Scan Now.
  • When finished, if items are found please click Quarantine.
  • Your PC should reboot now if any items were found.
  • After reboot, a log file will be opened. Attach or Copy its content into your next reply.

RESTART THE COMPUTER Before running Step 3

STEP 03
Please download the Farbar Recovery Scan Tool and save it to your desktop.

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

  • Double-click to run it. When the tool opens, click Yes to disclaimer.
  • Press the Scan button.
  • It will make a log (FRST.txt) in the same directory the tool is run. Please attach it to your reply.
  • The first time the tool is run, it also makes another log (Addition.txt). If you've, run the tool before you need to place a check mark here each time
  • Please attach the Additions.txt log to your reply as well.
  • On your next reply, you should be attaching frst.txt and additions.txt to your post, every time.

 

Thanks

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Really appreciate the response and offer to help. I’ll try to knock those steps out tomorrow. I guess my one question would be, will running these three programs work even though David (in the research forum) indicated the payload associated with the file I opened is not currently detectable? Looks like only three virus scanners are currently detecting the payload. Am I not thinking about it correctly? Would it be better to wait on malwarebytes to be updated? 

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Yep. Sorry if I wasn’t clear but David also indicated the payload from that file wasn’t detectable last night. In my original post David provided two virustotal reports. One for the macro and one for the payload. Since then it appears malwarebytes has been updated to now identify the payload. I’ll follow your steps today.

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  • Root Admin

Thanks @Virusalerter

I would recommend that you uninstall Bonjour - go to Control Panel, Programs, Uninstall and uninstall it.

What exactly is mDNSResponder.exe?

https://www.groovypost.com/howto/howto/what-is-mdnsresponder-exe-and-why-is-it-running/

MDNSResponder, also known as Bonjour, is Apple’s native zero-configuration networking process for Mac that was ported over to Windows and associated with MDNSNSP.DLL.  On a Mac or iOS device, this program is used for networking nearly everything.  On Windows, this process is only necessary for sharing libraries via iTunes and other Mac applications like the Apple TV that were ported to Windows.  Bonjour allows different computers running iTunes to communicate with each other regardless of network configuration, this is because it enables automatic network discovery.

What Is mDNSResponder.exe / Bonjour and How Can I Uninstall or Remove It?
https://www.howtogeek.com/howto/6456/what-is-mdnsresponder.exe-bonjour-and-how-can-i-uninstall-or-remove-it/

 

 

The program CCleaner is no longer recommended by most Experts but it's your choice if you want to keep it. Windows Disk Cleanup and Storage Sense can pretty much clean up most things

Application errors:
==================
Error: (08/15/2020 02:25:41 PM) (Source: MsiInstaller) (EventID: 11316) (User: NT AUTHORITY)
Description: Product: CCleaner Update Helper -- Error 1316. The specified account already exists.

 

 

Please download the attached fixlist.txt file and save it to the Desktop or location where you ran FRST from.
NOTE. It's important that both files, FRST or FRST64, and fixlist.txt are in the same location or the fix will not work.

Please make sure you disable any real time antivirus or security software before running this script. Once completed make sure you re-enable it.

NOTICE: This script was written specifically for this user, for use on this particular machine. Running this on another machine may cause damage to your operating system that cannot be undone.

Run FRST or FRST64 and press the Fix button just once and wait.
If the tool needs a restart please make sure you let the system restart normally and let the tool complete its run after restart.
The tool will make a log on the Desktop (Fixlog.txt) or wherever you ran FRST from. Please attach or post it to your next reply.

Note: If the tool warned you about an outdated version please download and run the updated version.

NOTE-1:  This fix will run a scan to check that all Microsoft operating system files are valid and not corrupt and attempt to correct any invalid files. It will also run a disk check on the restart to ensure disk integrity. Depending on the speed of your computer this fix may take 30 minutes or more.

NOTE-2: 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
  • BITS transfer queue (qmgr*.dat files)
  • 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.

The system will be rebooted after the fix has run.

fixlist.txt

Thanks

 

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  • Root Admin

Thank you. The log looks good overall. It did find and fix the following.

Windows Resource Protection found corrupt files and successfully repaired them.

 

Let me have you run the following please.

 

SecurityCheck by glax24              

I would like you to run a tool named SecurityCheck to inquire on the current-security-update  status  of some applications.

  • Download SecurityCheck by glax24 from here  https://tools.safezone.cc/glax24/SecurityCheck/SecurityCheck.exe
  • and save the tool on the desktop.
  • If Windows's  SmartScreen block that with a message-window, then
  • Click on the MORE INFO spot and over-ride that and allow it to proceed.
  • This tool is safe.   Smartscreen is overly sensitive.
  • Right-click  with your mouse on the Securitycheck.exe  and select "Run as administrator"   and reply YES to allow to run & go forward
  • Wait for the scan to finish. It will open in a text file named SecurityType.txt. Close the file.  Attach it with your next reply.
  • You can find this file in a folder called SecurityCheck, C:\SecurityCheck\SecurityCheck.txt

 

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  • Root Admin

Please go to Control Panel, Programs, Uninstall and uninstall Bonjour

What exactly is mDNSResponder.exe? {Bonjour}

https://www.groovypost.com/howto/howto/what-is-mdnsresponder-exe-and-why-is-it-running/

MDNSResponder, also known as Bonjour, is Apple’s native zero-configuration networking process for Mac that was ported over to Windows and associated with MDNSNSP.DLL.  On a Mac or iOS device, this program is used for networking nearly everything.  On Windows, this process is only necessary for sharing libraries via iTunes and other Mac applications like the Apple TV that were ported to Windows.  Bonjour allows different computers running iTunes to communicate with each other regardless of network configuration, this is because it enables automatic network discovery.

What Is mDNSResponder.exe / Bonjour and How Can I Uninstall or Remove It?
https://www.howtogeek.com/howto/6456/what-is-mdnsresponder.exe-bonjour-and-how-can-i-uninstall-or-remove-it/

 

I would also highly recommend the uninstall of CCleaner Browser

 

 

Please review and update or remove as appropriate. Then click on Start and type in "Check for updates" and check for any Windows updates.

 

--------------------------- [ OtherUtilities ] ----------------------------

Microsoft .NET Framework 4.5.1 v.4.5.50938 Warning! Download Update

NVIDIA GeForce Experience 3.11.0.73 v.3.11.0.73 Warning! Download Update


FileZilla Client 3.46.3 v.3.46.3 Warning! Download Update


WinSCP 5.11.3 v.5.11.3 Warning! Download Update

 

--------------------------- [ AppleProduction ] ---------------------------

QuickTime 7 v.7.77.80.95 Warning! This software is no longer supported. Please uninstall it and use another software.


--------------------------- [ AdobeProduction ] ---------------------------
Adobe AIR v.1.0.4990 Warning! Download Update

Adobe Reader 9 v.9.0.0 Warning! This software is no longer supported. Please uninstall it and use Adobe Acrobat Reader DC.

 

 

 

Once the items above have been completed please go ahead and reinstall Malwarebytes

Please follow the directions here to reinstall Malwarebytes

Uninstall and reinstall Malwarebytes using the Malwarebytes Support Tool

Thaks

 

 

Edited by AdvancedSetup
updated information
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Thanks again. So what's your take?  Do you feel like I somehow stopped the payload from being pushed to my PC?  I believe I did enable the word document macro but to what I extent I don't know and I did kill a window that appeared to be active in the background.  Would suspicious activity from the malware be this delayed if it did effectively drop?  

Do you recommend any router/printer resetting?

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  • Root Admin

We don't directly scan documents but our anti-exploit protection module would normally kick in and stop macro threats.

image.png

 

You also have Avast antivirus which may have also blocked it before anything happened.

At this time there are no ongoing signs of an infection. Keeping your computer up to date as well as your security products and having good solid backups of your data is very important.

As long as the password on your router is strong and not using the default password you should not need to reset it. If you've never reset it or don't know the Admin password then yes you may want to reset it and ensure you do setup a strong unique password for it.

 

Is there anything else I can assist you with then before we close up here?

Thanks

 

 

 

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  • Root Admin

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 for Tips to help protect from infection

Thank you

 

 

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