Files with bll extension are known as dangerous email-aware files.

There are 2 other file types using
the BLL file extension!

empty icon.bll - Borland Delphi localization Information

empty icon.bll - ENVI bad lines list

Detailed description

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BLL file extension - VBS/European-A worm file

What is bll file? How to open bll files?

File type specification:

Dangerous and malicious file type icon Dangerous and malicious file type

VBS/European-A is an email-aware Visual Basic Script worm. The worm creates a folder C:\startup, if it does not already exist, into which it copies itself with one of the following ten possible filenames:

"startup.bll"
"start.bll"
"winstart.bll"
"autoexec.bat.bll"
"win.ini.bll"
"config.bll"
"windoh.bll"
"fooled.bll"
"nothing.bll"

Help how to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:

As far as we know, this .bll file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

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