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Have a virus (believe to be using powershell to run commands)


Go to solution Solved by Maurice Naggar,

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Hello @teegee and :welcome::

While you are waiting for the next qualified/approved malware removal expert helper to weigh in on your topic, and even though you may have run the following Malwarebytes utility, or its subsets, please carefully follow these instructions:

  1. Download the Malwarebytes Support Tool.
  2. In your Downloads folder, open the mb-support-x.x.x.xxx.exe file.
  3. In the User Account Control (UAC) pop-up window, click Yes to continue the installation.
  4. Run the MBST Support Tool.
  5. In the left navigation pane of the Malwarebytes Support Tool, click Advanced.
  6. In the Advanced Options, click only Gather Logs. A status diagram displays the tool is Getting logs from your computer.
  7. A zip file named mbst-grab-results.zip will be saved to the Public desktop, please attach that file in your next reply to this topic. Please do NOT copy and paste.

For the short time between when you post the diagnostic logs, and when your helper weighs in, please take no further self-directed remedial actions that will invalidate the diagnostic logs you will have sent.

Thank you.

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Hello @teegee I will guide you along on looking for remaining malware, if any. Let's keep these principles as we go along.

  • Removing malware can be unpredictable
  • Please don't run any other scans, download, install or uninstall any programs while I'm working with you.
  • Only run the tools I guide you to.
  • Do not run online games while case is on-going. Do not do any free-wheeling web-surfing.
  • The removal of malware isn't instantaneous, please be patient.
  • Cracked or or hacked or pirated programs are not only illegal, but also will make a computer a malware victim. Having such programs installed, is the easiest way to get infected. It is the leading cause of ransomware encryptions. It is at times also big source of current trojan infections. Please uninstall them now, if any are here, before we start the cleaning procedure.
  • Please stick with me until I give you the "all clear".
  • If your system is running Discord, please be sure to Exit out of it while this case is on-going.
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  • Solution

Please set File Explorer to SHOW ALL folders, all files, including Hidden ones. Use OPTION ONE or TWO of this article
Please use this Guide
( 2 )
Next action step:
Disable ( turn OFF ) Fast Startup
https://www.windowscentral.com/how-disable-windows-10-fast-startup
Then restart the computer
( 3 )

We will be doing several different tasks. Please run the following custom script. Read all of this before you start. Please Close all open work.

Once the script-run has been completed, please attach the file FIXLOG.TXT to your next reply

Farbar program :  is FRSTENGLISH.exe  The tool is there already. We will use it to run a custom-script.

Please download the attached fixlist.txt file and save it to C:\Users\Tan\Downloads

Fixlist.txt < - - -

NOTE. It's important that both files, FRSTENGLISH, and fixlist.txt are in the same location or the fix will not work.

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.

Use File Explorer to go to the Downloads folder

RIGHT-Click on   FRSTENGLISH and select

RUN as Administrator

and reply YES to allow it to go forward to start.

That is important so that this run has Elevated Administrator rights !!

NEXT 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 Downloads folder (Fixlog.txt) . 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 reset the Winsock. It will attempt to clear all Cache and history on web browsers. Depending on the speed of your computer this fix may take 40-50 minutes or more.

The system will be rebooted after the fix has run. Attach FIXLOG.txt with next reply.  👈

 

A request please 

I would like to get a copy of what we placed in Quarantine, from the runs I had you do. Please. 

  • Using Windows File Explorer, Navigate to C:\FRST folder on your system. Expand the folder so you see all contents.
  • Right click on Quarantine > Send to > Compressed (zipped) folder
  • Upload the archive in your next reply
  • If archive is too big you can upload here > https://wetransfer.com/

NEXT, look on your Desktop for a ZIP file with a name that has the current date & time of this run and attach it. It has this type name like Date_Time.zip

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Thank you. A benefit of this custom-run was that Windows System File Checker found & made a fix on system files. Windows Resource Protection found corrupt files and successfully repaired them.
Also the rogue scheduled task at the source of the "powershell" abuse is now removed

Make this one adjustment at this point.
Start Malwarebytes. Click Settings ( gear ) icon. Next, lets make real sure that Malwarebytes does NOT register with Windows Security Center

Click the Security Tab. Scroll down to

"Windows Security Center"

Click the selection to the left  for the line "Always register Malwarebytes in the Windows Security Center".
{ We want that to be set as Off   .... be sure that line's  radio-button selection is all the way to the Left.  thanks. }

This will not affect any real-time protection of the Malwarebytes for Windows    😃.

Close Malwarebytes.

>

The Microsoft Safety Scanner is a free Microsoft stand-alone virus scanner that can be used to scan for & remove malware or potentially unwanted items from a system. This tool does not install. It is run on-demand.

This link is for the 64-bit version of MSERT.exe . Be sure you save the file first
https://definitionupdates.microsoft.com/download/DefinitionUpdates/safetyscanner/amd64/MSERT.exe

Upon completion of the save, Launch MSERT.exe
Accept the agreement terms of Microsoft
Select CUSTOM scan
Look on Scan Options & select CUSTOM scan & then select the C drive to be scanned.

Then start the scan. Have lots of patience. Once you start the scan & you see it started, then leave it be.

Once 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.
Again, any on-screen display about repeat 'infection' is not to be relied on. Ignore those.
We only rely on the end result that is on the log-report-file.


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

It is normal for the Microsoft Safety Scanner to show 'detections' during the scan process on the screen itself.

It is scanning for basically all bread crumbs or traces of files and registry entries that "might" be or have been part of some infection or previous infection.

That DOES NOT mean the computer is infected. Once the scan has been completed it uploads the log to their Cloud service which then uses Artificial Intelligence to determine if in fact any of the traces are an infection or not.

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Bravo 💥😉 MS Safety scanner reports no virus, no trojan, no malware present.

Microsoft Safety Scanner v1.385, (build 1.385.471.0)
Started On Sun Mar 19 11:35:53 2023

Engine: 1.1.20100.6
Signatures: 1.385.471.0
MpGear: 1.1.16330.1
Run Mode: Interactive Graphical Mode

Results Summary:
----------------
No infection found.
Successfully Submitted MAPS Report
Successfully Submitted Heartbeat Report
Microsoft Safety Scanner Finished On Sun Mar 19 13:52:13 2023

Temporarily disable Microsoft SmartScreen to download the next software below 

I would recommend getting a readout report as to update status of some key apps.
Download SecurityCheck by glax24 from here

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

When all done, you may go back to turn ON the EDGE Smartscreen protection.

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Per the SecurityCheck, here are the programs that need your attention & follow-up Action.
Node.js v.14.15.3  Warning! Download Update

NVIDIA GeForce Experience 3.23.0.74 v.3.23.0.74 [b  ]Warning! Download Update[/b]

WinRAR 5.80 beta 4 (64-bit) v.5.80.4  Warning! Download Update

Discord v.0.0.309  Warning! Download Update

Telegram Desktop version 4.2 v.4.2  Warning! Download Update

ProtonVPN v.1.17.6  Warning! Download Update

JAVA you really do not need, unless there ia a application that must have it.
But you have 3 old old versions which are insecure.
Uninstall all 3 currently installed
Java 8 Update 281 (64-bit) v.8.0.2810.9 - Uninstall 
Java SE Development Kit 8 Update 281 -- Uninstall
Java 8 Update 241 v.8.0.2410.7 -- Uninstall

If there is some program that really needs Java then install new one (jre-8u361-windows-x64.exe) Download Update

Let's go ahead and do some clean-up work and remove the tools and logs we've run.
Please download KpRm by kernel-panik and save it to your desktop.

  • right-click kprm_(version).exe and select Run as Administrator.
  • Read and accept the disclaimer.
  • When the tool opens, ensure all boxes under Actions are checked.
  • Under Delete Quarantines select Delete Now, then click Run.
  • Once complete, click OK.
  • A log will open in Notepad titled kprm-(date).txt.
  • You may attach that file to your next reply. (not compulsory)

Delete mb-support-1.8.7.918.exe
Delete mbst-grab-results.zip on the Desktop. 

Edited by AdvancedSetup
Corrected font issues
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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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