Virus.DOS.BugsBunny is a virus on DOS.

There are 3 variants in 2 versions:

  • Virus.DOS.BugsBunny.282
  • Virus.DOS.BugsBunny.497 (plus B)



This is a dangerous non-memory resident file overwriting variant. When it is run, it overwrites every DOS executable file in current directory except COMMAND.COM.

BugsBunny.497 and 497.b

These are the harmless memory resident parasitic variants. When the virus is loaded into memory, it infects any DOS executable file that is run, except COMMAND.COM and files that are smaller than 200 bytes.

Infected files will have the seconds value of 62 in their timestamp.

Advanced details

The following table shows the TSR memory usage of the variants.

Variant Memory usage in bytes
BugsBunny.282 Non-TSR
BugsBunny.497 (plus B) 544

MD5 hashes:

Variant Hash
BugsBunny.282 78ff139eeab680062b1cd3904fd5e064
BugsBunny.497 4c82c556d470f97ca9bde934dafde906
BugsBunny.497.b 95a751435fa8eaa2fcf1aed41ec60498



On running infected programs, instead of running the host program, the following message is displayed:

Datei nicht ausführbar. Neujahrsgrüße von Bugs-Bunny (߁_¿-߁TTí)
Bugs-Bunny Virus, Created by iRS-EB 03848

Translation (from German):

File can not be executed. New Year Greetings from Bugs-Bunny (߁_¿-߁TTí)
Bugs-Bunny Virus, Created by iRS-EB 03848

BugsBunng.497 and 497.b

These variants do not manifest themselves at anyway.

Other details

BugsBunny.282 contains the internal text string:


BugsBunny.497 and 497.b contain the internal text strings:





BugsBunny virus review by Alles Sandro

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