Threat Description



Aliases: Blue_Nine, Blue_Nine
Category: Malware
Type: Virus
Platform: W32


This is a fast infector, which infects COM files when they are executed or accessed. Blue_Nine is a stealth virus, making the size of the infected files seem to be the original. Blue_Nine has lots of antiheuristics features, but it also contains several bugs.


Automatic Disinfection

Allow F-Secure Anti-Virus to disinfect the relevant files.

For more general information on disinfection, please see Removal Instructions.

Technical Details

There are several variants of Blue_Nine. The original variant (Blue_Nine.925.A) contains this text:

Blue Nine Virus by Conzouler 1994


This variant contains this text:

It's only a lil lightfearing creature

This variant does nothing but spreads.

Technical Details: Peter Szor, F-Secure, 1996


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