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Crash

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This is about the virus. If you were looking for the system crash screens, see Blue Screen of Death.

Virus.DOS.Crash is a parasitic virus that runs on MS-DOS.

There are 2 variants:

  • Virus.DOS.Crash.543
  • Virus.DOS.Crash.600

Behavior

When the virus is run, it infects the first uninfected DOS executable located in specified directories defined by PATH environment variable by writing itself to the end of the file. On infection the virus might corrupt the host, running these files may hang the system.

The infection size varies between different files.

Payload

The virus activates on Friday 13th.

Crash.543

When an infected program in run it appends the message before running the host program:

That could be a crash, crash, crash !
Crash543 payload

The message delivered by Crash.543

Crash.600

Once an infected program is run, the virus displays randomly colored bars and characters on the screen.

Other details

Check out the extremely destructive version which is written in high-level programming language.

The virus contains the internal text strings:

*.COM
PATH=

Videos

CRASH00:57

CRASH.COM MS-DOS VIRUS

Crash.600 virus payload

Virus.DOS01:33

Virus.DOS.Crash

Crash virus review by Alles Sandro

Crash DOS Virus00:15

Crash DOS Virus

Crash virus review by danooct1 (early videos)

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