1. Skip to navigation
  2. Skip to content
  3. Skip to sidebar

Friday the 13th


Friday the 13th
South African



This is one of the oldest viruses around, but it is very rare. In fact, it may even be extinct, apart from copies in the hands of virus researchers. The original virus is 419 bytes long, but several minor variants are known, with slightly different lengths.

Like the Lehigh virus it can be stopped simply by making .COM files read-only. Most other viruses are not bothered by this, however.

Disinfection & Removal

Automatic Disinfection

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

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

Technical Details


A variant where the destructive part has been disabled and which was distributed for demonstration purposes.

Variant:ENET 37

This 613 byte virus contains the text:

    ENET N§37 Virus benigno - Por EDGE BAND!
      Realizado por un alumno del Enet 37 (?)  25/5/92
      Te parece usar la computadora un Domingo?
      Presiona una tecla.

Submit a sample

Wondering if a file or URL is malicious? Submit a sample to our Lab for analysis via the Sample Analysis System (SAS)

Give And Get Advice

Give advice. Get advice. Share the knowledge on our free discussion forum.