WMAIL-ENDPOINT/CHAT Trojan.tasker.powershell

[YoungStarDC]

Hi,

Since today, I've been constantly getting a pop up from MB that it has blocked a Trojan/Riskware from WMAIL-ENDPOINT/CHAT. A scan full scan has yielded no results. Any help would be greatly appreciated!

[Maurice Naggar]

Hi @YoungStarDC  My name is Maurice. What follows is the 1st ( but very key ) first step. 

I would like a report set for review.   This is a report only.

Please download MALWAREBYTES MBST Support Tool

Once you start it click Advanced >>> then   Gather Logs

 Have patience till the run has finished.

Upload an archive once it is done. Attach the mbst-grab-results.zip from the Desktop.

 

• Please attach  mbst-grab-results.zip    to your reply 😀

[YoungStarDC]

Hi @Maurice Naggar, thank you for your quick reply!

Please find the requested archive attached to this message.

mbst-grab-results.zip

[Maurice Naggar]

I would like for us to get copies of 2 files that seem to be connected to the scheduled task that is at the root of main issue. This is just to collect copies, to get them into a zip file; plus to arrange to have this type of task to be logged by Windows. This is like a first step. 

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

Be very sure to Save any work-files you have open at this point. Close & Save any open edits, if any. . 

We will use FRSTENGLISH  on the Downloads  folder to run a custom script.    The system will be rebooted after the script has run.

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

• Please save the (attached file named) FIXLIST.txt   to the   Downloads   folder

Fixlist.txt        <<< - - - - -

Then, Start the Windows Explorer and then, go  to the Downloads   folder.

RIGHT click on FRSTENGLISH   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 If the tool warns you the version is outdated, please download and run the updated version.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.

 

PLEASE have lots and lots of patience when this starts. You will see a green progress bar start. 

1. Please attach the FIXLOG.txt with your next reply later, at your next opportunity.
2. AFTER completion of this run,  look on the desktop for a ZIP file named with the current local date & time of this run. Please attach it also.
3. The Malwarebytes block notices do mean that it is protecting your system.
4. We will do more on the next round.  Thank you.

[YoungStarDC]

Please find the two requested files attached.

28.06.2022_02.35.50.zip Fixlog.txt

[Maurice Naggar]

Thank you. There is a trojan script here. The best classification I have found is the one by CheckPoint. They classify as Trojan.Multi.GenAutorunTaskFile.a

What follows below is a next step. There will still be more to do after this.

First Delete the prior Fixlist.txt on Downloads folder  ( the one from before ). 

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

Be very sure to Save any work-files you have open at this point. Close & Save any open edits, if any. . 

We will use FRSTENGLISH  on the Downloads  folder to run a custom script.    The system will be rebooted after the script has run.

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

• Please save the (attached file named) FIXLIST.txt   to the   Downloads   folder

Fixlist.txt        <<< - - - - -

Then, Start the Windows Explorer and then, go  to the Downloads   folder.

RIGHT click on FRSTENGLISH   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.

 

PLEASE have lots and lots of patience when this starts. You will see a green progress bar start. 

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

[YoungStarDC]

Please find it attached.

Fixlog.txt

[Maurice Naggar]

Please do one new Scan with Malwarebytes. Let me know that result. Also, let me know whether the Block notices have ceased,

[YoungStarDC]

Hi Maurice, I've stopped getting the notices and a full scan with Malwarebytes says 0 detections. It seems to be solved, thank you so much!

Do you have any idea how I got this trojan? It seemed quite random.

[Maurice Naggar]

Hello. Glad to hear the good news. How does this type of pest happen: My experience in other cases of this type of trojan, over a span of some 2 months, is that a download of a "game mod" of a game or perhaps a download of hacked app is what starts the cascade of infection.
Otherwise, the other possibilities are the accepting & opening an Email attachment.
*

[  Do a custom scan with Microsoft Defender Antivirus ]

Just want to do a visual check in Windows Security to see (visually) that Microsoft Defender is on , and to do a Custom scan.

From the Windows Start menu, select Settings, then select Update and Security.

Next, look at the left-side menu & select Windows Security

Next, In Windows Security section: Click on the grey button Open Windows Security

Now, click on the shield Virus and threat protection

Look to see that Microsoft Defender is shown & available for use.

On the next display, look at all the options.  Look down the list and see "Check for Updates" .

You should click on that to have the system check for updates for Windows Defender.  Watch & wait for that to complete.

Please also note that the Scan options (all) can be displayed by clicking on Scan options.   Click that & select CUSTOM scan & then pick the C drive  & have it go forward.

Once it has started the scan phase, you can go take a long break.   Let me know the results.

[YoungStarDC]

The scan turned out clean, 0 threats found.

[Maurice Naggar]

Good. Well worth it to do a different check. This will be a check with ESET Onlinescanner for  potential viruses, other malware, adwares, & potentially unwanted applications.

Go to https://download.eset.com/com/eset/tools/online_scanner/latest/esetonlinescanner.exe

 

It will start a download of "esetonlinescanner.exe"

• Save the file to your system, such as the Downloads folder, or else to the Desktop.
• Go to the saved file, and double click it to get it started.

 

• When presented with the initial ESET options, click on "Computer Scan".
• Next, when prompted by Windows, allow it to start by clicking Yes
• When prompted for scan type, Click on Full scan

Look at & tick ( select ) the radio selection "Enable ESET to detect and quarantine potentially unwanted applications" and click on Start scan button.

• Have patience. The entire process may take an hour or more. There is an initial update download.

There is a progress window display. You may step away from machine &. Let it be.  That is, once it is under way, you should leave it running.  It will run for several hours.

• At screen "Detections occured and resolved" click on blue button "View detected results"
• On next screen, at lower left, click on blue "Save scan log"
• View where file is to be saved. Provide a meaningful name for the "File name:"
• On last screen, set to Off (left) the option for Periodic scanning
• Click "save and continue"
• Please attach the report file so I can review

[YoungStarDC]

It took a long while but here we have it!

ESET scan log 29-06-22.txt

[Maurice Naggar]

Hi. That ESET Onlinescan is well worth the time and effort. It has confirmed the removal of 2 previously-removed trojans. VBS/Runner.NWJ trojan & PowerShell/Agent.AIX trojan. Further, it also removed javascript trojans, plus several hacktool elements.

Let's check your system with another ( different ) antivirus scan tool.

Please download and run the following Kaspersky Virus Removal Tool 2020 and save it to your Desktop.

(Kaspersky Virus Removal Tool version 20.0.10.0 was released on November 9, 2021)

Download: Kaspersky Virus Removal Tool

• How to run a scan with Kaspersky Virus Removal Tool 2020

          https://support.kaspersky.com/15674

• How to run Kaspersky Virus Removal Tool 2020 in the advanced mode

          https://support.kaspersky.com/15680

• How to restore a file removed during Kaspersky Virus Removal Tool 2020 scan

          https://support.kaspersky.com/15681

 

Select the    Windows Key and R Key together, the "Run" box should open. Drag and Drop KVRT.exe into the Run Box. C:\Users\{your user name}\DESKTOP\KVRT.exe will now show in the run box. add -dontencrypt   Note the space between KVRT.exe and -dontencrypt C:\Users\{your user name}\DESKTOP\KVRT.exe -dontencrypt should now show in the Run box.   That addendum to the run command is very important, when the scan does eventually complete the resultant report is normally encrypted, with the extra command it is saved as a readable file. Reports are saved here C:\KVRT2020_Data\Reports and look similar to this report_20210123_113021.klr Right-click direct onto that report, select > open with > Notepad. Save that file and attach it to your reply. To start the scan select OK in the "Run" box. A EULA window will open, tick all confirmation boxes then select "Accept" In the new window select "Change Parameters" In the new window ensure all selection boxes are ticked, then select "OK" The scan should now start... When complete if entries are found there will be options, if "Cure" is offered leave as is. For any other options change to "Delete" then select "Continue" When complete, or if nothing was found select "Close" Attach the report information as previously instructed... Sincerely.

[YoungStarDC]

Hi Maurice, please find the log attached.

report_2022.06.29_15.55.16.txt

[Maurice Naggar]

That scan was well worth doing. Question: Please advise whether any new Block notices have occurred about "wmail" ?

and # 2

I would recommend getting a report on the update status of some key apps.

• 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

[YoungStarDC]

Hi Maurice, SecurityCheck.txtno more warnings. Please find the check attached.

[Maurice Naggar]

It is great to hear that the pest is gone.  🖕 💢

What follows is what is highlighted by SecurityCheck as needing your follow-up actions. This will help get the system more secure.

Git version 2.27.0 v.2.27.0  Warning! Download Update

VMware Workstation v.15.5.2  Warning! Download Update

Microsoft Visual Studio Code v.1.59.0  Warning! Download Update

FileZilla Client 3.57.0 v.3.57.0  Warning! Download Update

GitHub Desktop v.2.8.3  Warning! Download Update

Python 3.9.4 (64-bit) v.3.9.4150.0  Warning! Download Update

TeamViewer v.15.20.3  Warning! Download Update

7-Zip 19.00 (x64) v.19.00  Warning! Download Update
Uninstall old version and install new one.

WinRAR 5.90 (64-bit) v.5.90.0  Warning! Download Update

IrfanView 4.58 (32-bit) v.4.58  Warning! Download Update

Discord v.1.0.9002  Warning! Download Update

Microsoft Teams v.1.4.00.11161  Warning! Download Update

WhatsApp v.2.2218.8  Warning! Download Update

Telegram Desktop version 3.7 v.3.7  Warning! Download Update

mIRC v.7.65  Warning! Download Update

Java 8 Update 251 (64-bit) v.8.0.2510.8   Warning! Download Update
Uninstall old version and install new one (jre-8u333-windows-x64.exe).

VLC media player v.3.0.16  Warning! Download Update

HandBrake 1.3.3 v.1.3.3  Warning! Download Update

Mozilla Firefox (x64 en-US) v.101.0.1  Warning! Download Update

CCleaner v.5.87 Warning! Ever since Piriform sold it to another entity, security pros hae ceased to endorse its use. You can use the built-into-Windows "CLEANMGR".

JDownloader 2 v.2.0  Warning! Suspected Adware! If this program is not familiar to you it is recommended to uninstall it.

Bonjour v.3.1.0.1 Warning! Application is distributed through partnership programs and bundle assemblies. Uninstall Bonjour. Your system does not need it.

Edited July 1, 2022 by AdvancedSetup
Corrected font issue

[YoungStarDC]

I will definitely do that, thank you very much!

[Maurice Naggar]

You are welcome.
This here is for tools cleanup.

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 may open in Notepad titled kprm-(date).txt.  I do not need it. Just close Notepad if it shows up.

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

Consider using PatchMyPC, keep all your software up-to-date - https://patchmypc.com/home-updater#download

What can help to prevent infections are (1) having Malwarebytes Premium as a real-time protection AND ( 2) observing computer-safety practices every single day & every single session using the computer. Listed below.

SAFETY TIPS:

Backup is your best friend.  Keep backups of your system on a regular basis to offline storage & keep those safe. https://forums.malwarebytes.com/topic/136226-backup-software/

It is not enough to just have a security program installed. Each pc user needs to practice daily safe computer and internet use.

Best  practices & malware prevention:
Follow best practices when browsing the Internet, especially on opening links coming from untrusted sources.
First rule of internet safety: slow down & think before you "click".
Never click links without first hovering your mouse over the link and seeing if it is going to an odd address ( one that does not fit or is odd looking or has typos). That is first golden principle. Do not be mindlessly quick with the "click finger". 🤔

Free games & free programs are like "candy". We do not accept them from "strangers". Never ever get or use hacked/cracked apps or games.

Never open attachments that come with unexpected ( out of the blue ) email or "instant message" no matter how enticing.
Never open attachments from the email itself. Do not double click in the email. Always Save first and then scan with antivirus program.

Pay close attention when installing 3rd-party programs. It is important that you pay attention to the license agreements and installation screens when installing anything off of the Internet. If an installation screen offers you Custom or Advanced installation options, it is a good idea to select these as they will typically disclose what other 3rd party software will also be installed.
Take great care in every stage of the process and every offer screen, and make sure you know what it is you're agreeing to before you click "Next".

Use a Standard user account rather than an administrator-rights account when "surfing" the web.
See more info on Corrine's SecurityGarden Blog http://securitygarden.blogspot.com/p/blog-page_7.html

Only using the Standard-access-level user account when surfing and downloading / installing would have been a tremendous way to prevent the infections of this machine.

Don't remove ( or change )  your current login. Just use the new Standard-user-level one for everyday use while on the internet.

 

Keep your system and programs up to date. Several programs release security updates on a regular basis to patch vulnerabilities. Keeping your software patched up prevents attackers from being able to exploit them to drop malware.

For other added tips, read "10 easy ways to prevent malware infection"  

I wish you all the best.

[Maurice Naggar]

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