Cascade

aka 1701 / 1704 / Falling Letters / Herbstlaub

Cascade virus characters falling on a DOS screen

discovered: 1987
origin: West Germany
reported by: various
author: unknown
family: Cascade
size: 1701 bytes
platform: DOS
vector: COM files
payload: visual, polymorphic
trigger: date-based, autumn months

Payload

Causes characters on the screen to detach from their lines and fall in a cascade to the bottom of the display.

~ writeup coming soon ~

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Sources

Internet Archive Malware Museum: Cascade :: Mikko Hypponen, Internet Archive Malware Museum

last updated: 2026-04-12 :: curated by the_curator