Threat Description

Prague

Details

Aliases:Prague, Backtime
Category:Malware
Type:Virus
Platform: W32

Summary



This virus was found in August 1991. It contains the texts 'Backtime' and turns the system timer to work backwards.



Removal


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More

You may wish to refer to the Support Community for further assistance. You also may also refer to General Removal Instructions for a general guide on alternative disinfection actions.



Technical Details




Variant:Blinker

Slightly shorter, only 512 bytes. Displays the following error messages occasionally:

Bad command  error reading device CON
Bad command  error writing device CON

Variant:Shaker

This variant is also 512 bytes, but it produces a very interesting "shaking" effect on the screen, when run, as the virus interferes with the video controller. This version contains the text "Shaker"


Variant:Pizza (Plastic Pizza)

This 1236 bytes long variant carries a copy of the Michelangelo virus with itself, and will infect all clean hard drives it spots with it.






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