Home > Threat descriptions >

Trojan:HTML/Browlock

Classification

Category: Malware

Type: Trojan

Platform: HTML

Aliases: Trojan:HTML/Browlock.[variant]

Summary


Trojan:HTML/Browlock is ransomware that prevents users from accessing the infected machine's Desktop; it then demands payment, supposedly for either possession of illegal material or usage of illegal software.

Removal


Automatic action

Once detected, the F-Secure security product will automatically handle a harmful program or file by either deleting or renaming it.

More

For more information, see Removing 'Police-themed' Ransomware.

Knowledge Base

Find the latest advice in our Community Knowledge Base.

About the product

See the manual for your F-Secure product on the Help Center.

Contact Support

Chat with or call an expert for help.

Submit a sample

Submit a file or URL for further analysis.

Technical Details


Trojan:HTML/Browlock has been reported to target users in multiple countries, including the United States, the United Kingdom and Canada. Typically, it will display a 'lock screen' purportedly from a local or federal law enforcement authority, claiming that the machine has been locked and encrypted due to 'illegal activities'. A 'fine' is then demanded to restore the system.

This malware was also covered in our Labs Weblog blogpost:

A lock screen used by one Browlock variant is shown below: