National CSIRT-CY | National Computer Security Incident Response Team of Cyprus

Η Εθνική Ομάδα Αντιμετώπισης Ηλεκτρονικών Επιθέσεων προβλέπει την αύξηση της ηλεκτρονικής ασφαλείας ενισχύοντας την προστασία του κυβερνοχώρου των Εθνικών Κρίσιμων Πληροφοριακών Υποδομών, των τραπεζών και των παροχών επικοινωνίας της Κυπριακής Δημοκρατίας.

New Coronavirus screenlocker malware is extremely annoying

22 April 2020

A fake WiFi hacking program is being used to distribute a new Coronavirus-themed malware that tries to lock you out of Windows while making some very annoying sounds.

Screenlockers are malware programs that display a lock screen when logging into Windows so that you cannot access the Windows desktop or interact with your installed programs and files.

This new screenlocker is called ‘CoronaLocker’ and was discovered by security researcher Max Kersten last week after a friend became infected by a program named ‘wifihacker.exe’.

When installed, the malware will extract numerous VBS files and a batch file that, when used together, create an annoying screenlocker functionality.

One of the VBS files called ‘speakwh.vbs’ uses speech synthesis to say “corona virus” over and over to be annoying.

Once installed, the computer will reboot, and upon restart, users will be shown a lock screen stating “you are infected of corona virus” with a contact email of This email address is being protected from spambots. You need JavaScript enabled to view it..

 

When a user logs into Windows, they will be shown a lock screen with an email address of This email address is being protected from spambots. You need JavaScript enabled to view it.. The good news is that you can type vb and press the OK button to get past this screen and launch your Windows desktop.

To see what Registry entries have been modified, you can see Kersten’s blog post.

It is not known how this malware is being distributed, but I would not be surprised to find out it was through YouTube videos or on Discord.

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