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Removal instructions for WindowsUpdate TSS

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Metallica

Metallica

    Spyware Veteran

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Content is republished with permission from Malwarebytes.

What is WindowsUpdate TSS?

The Malwarebytes research team has determined that WindowsUpdate TSS is a Tech Support Scam. These so-called "Tech Support Scammers" try to trick you into calling their phone number for various reasons, all of which turn out to be fraudulent in the end.

How do I know if my computer is affected by WindowsUpdate TSS?

You may see these warnings during install:

warning1.png

warning2.png

How did WindowsUpdate TSS get on my computer?

Tech Support Scammers use different methods for distributing themselves. This particular one was offered as a fake Windows Update, but it only installs files that will produce a fake Windows Activation screen with the Tech Support Scammers number.

main.png

How do I remove WindowsUpdate TSS?
Our program Malwarebytes Anti-Malware can detect and remove this potentially unwanted application, but due to the nature of the infection it takes some extra steps.
  • If you click on the example picture of the product key, a few options will appear:
    clicked.png
  • Click on the CMD button to open a Command Prompt.
    removecmd.png
  • In the Command prompt type taskmgr and hit Enter to open the Taskmanager.
    taskmgr.png
  • Select the process called fatalerror(.exe) and click on End Process.
  • Then type explorer in the Command prompt and hit Enter to open a file explorer window.
  • From there you can navigate around and follow the instructions below.
Another option is to reboot into Safe Mode with Networking and then follow the instructions below.
  • Please download Malwarebytes Anti-Malware to your desktop.
  • Double-click mbam-setup-{version}.exe and follow the prompts to install the program.
  • At the end, be sure a check-mark is placed next to:
    Launch Malwarebytes Anti-Malware
  • Then click Finish.
  • Once the program has loaded, select Scan Now. Or select the Threat Scan from the Scan menu.
  • If an update is available, it will be implemented before the rest of the scanning procedure.
  • When the scan is complete, make sure that all Threats are selected, and click Remove Selected.
  • Restart your computer when prompted to do so.
Note: the product key to unlock this Tech Support Scam is qwert-yuiop-asdfg-hjklz-xcvbn
Enter that in the form and click on the ENTER button and you see this:

clicked2.png

Unfortunately clicking finish stops fatalerror.exe but it does not trigger explorer, so you will have to reboot or use Ctrl-Alt-Del to fire up the Task Manager.

Is there anything else I need to do to get rid of WindowsUpdate TSS?
  • No, Malwarebytes' Anti-Malware removes WindowsUpdate TSS completely.
How would the full version of Malwarebytes Anti-Malware help protect me?

We hope our application and this guide have helped you eradicate this hijacker.

As you can see below the full version of Malwarebytes Anti-Malware would have protected you against the Tech Supprt Scam.


protection1.png


Technical details for experts

You may see these entries in FRST logs:


 HKCU\...\Run: [L] => C:\Program Files (x86)\WindowsUpdate\fatalerror.exe [532480 2016-08-16] ()
 HKCU\...\Winlogon: [Shell] C:\Program Files (x86)\WindowsUpdate\fatalerror.exe [532480 2016-08-16] () <==== ATTENTION
 C:\Program Files (x86)\WindowsUpdate
Alterations made by the installer:
 
File system details [View: All details] (Selection)
---------------------------------------------------
    Adds the folder C:\Program Files (x86)\WindowsUpdate
       Adds the file fatalerror.exe"="8/16/2016 3:51 AM, 532480 bytes, A
       Adds the file sr60.bat"="8/16/2016 4:28 AM, 124 bytes, A

Registry details [View: All details] (Selection)
------------------------------------------------
    [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]
       "L"="REG_SZ", "C:\Program Files (x86)\WindowsUpdate\fatalerror.exe"
    [HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Winlogon]
       "Shell"="REG_SZ", "C:\Program Files (x86)\WindowsUpdate\fatalerror.exe"
    [HKEY_CURRENT_USER\Software\WindowsUpdate\WindowsUpdate]
       "Path"="REG_SZ", ""
Malwarebytes Anti-Malware log:
 
Malwarebytes Anti-Malware
www.malwarebytes.org

Scan Date: 8/25/2016
Scan Time: 9:27 AM
Logfile: mbamWindowsUpdateTSS.txt
Administrator: Yes

Version: 2.2.1.1043
Malware Database: v2016.08.25.03
Rootkit Database: v2016.08.15.01
License: Premium
Malware Protection: Enabled
Malicious Website Protection: Enabled
Self-protection: Enabled

OS: Windows 7 Service Pack 1
CPU: x64
File System: NTFS
User: {username}

Scan Type: Threat Scan
Result: Completed
Objects Scanned: 318670
Time Elapsed: 8 min, 41 sec

Memory: Enabled
Startup: Enabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Enabled
Heuristics: Enabled
PUP: Enabled
PUM: Enabled

Processes: 0
(No malicious items detected)

Modules: 0
(No malicious items detected)

Registry Keys: 0
(No malicious items detected)

Registry Values: 2
Ransom.TechSupportScam, HKCU\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN|L, C:\Program Files (x86)\WindowsUpdate\fatalerror.exe, Quarantined, [2027b7981a8070c66cd334a45ba96a96]
Backdoor.Agent.WU, HKCU\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON|Shell, C:\Program Files (x86)\WindowsUpdate\fatalerror.exe, Quarantined, [202777d8fd9dc96d5fab3093986b39c7]

Registry Data[b]:[/b] 0
(No malicious items detected)

Folders: 0
(No malicious items detected)

Files: 2
Ransom.TechSupportScam, C:\Program Files (x86)\WindowsUpdate\fatalerror.exe, Quarantined, [2027b7981a8070c66cd334a45ba96a96], 
Ransom.TechSupportScam, C:\Users\{username}\Desktop\WindowsUpdate_Setup.exe, Quarantined, [6fd8242b6832a78f55e9ab2d2dd7669a], 

Physical Sectors: 0
(No malicious items detected)


(end)
As mentioned before the full version of Malwarebytes Anti-Malware could have protected your computer against this threat.
We use different ways of protecting your computer(s):
  • Dynamically Blocks Malware Sites & Servers
  • Malware Execution Prevention
Save yourself the hassle and get protected.
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