Threat description




Reverse stays resident in memory and infects COM and EXE files when they are accessed.


Automatic action

Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.

More scanning & removal options

More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.

You may also refer to the Knowledge Base on the F-Secure Community site for more information.

Contact Support

F-Secure customers can request support online via the Request support or the Chat forms on our Home - Global site.

Technical Details

Reverese is encrypted with a variable key. The body of the virus contains two filenames written backwards:



COMMAND.COM is infected by overwriting a block of zeroes inside it. NCMAIN.EXE is not infected at all.

Reverse contains the following text, which is not displayed:

Reverse-948 Created by Renata G. from Lubin City in Sept 1993


Similar and also 948 bytes, but contains this text:

Red Spider Virus created by Garfield from Zielona Gora in Feb 1993

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