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The No Pasaran variant of Spanska is a parasitic encrypted virus that runs on MS-DOS, written by Spanska from 29A.

There are 3 variants in this version:

  • Virus.DOS.Spanska.1000
  • Virus.DOS.Spanska.1008
  • Virus.DOS.Spanska.1120.a

Behavior

First 7 uninfected DOS executables will be infected when the virus is run.

Spanska.1120.a is the initial release in 1996, which contains bugs that might cause a system hang during execution, but not in those infected files. Spanska.1000 and 1008 are the "version 2" as stated in the payload, as they fixed some bugs since the 1,120-byte variant.

Payload

When an infected file is run at the time which the minute equals to 22 and the second is less than 30, the virus activates with a video effect of two flame animations at the lower corners.

Spanska.1000 and 1008

These variants displays the messages in sequence:

Remember those who died for Madrid
No Pasaran! Virus v2 by Spanska 1997

Spanska.1120.a

This variant is an earlier release, it displays the messages in sequence:

Remember those who died for Madrid
No Pasaran! Virus (c) Spanska 1996
Spanska1000 payload1

The first message in the payload.

Other details

Spanska.1120.b, having the same infection size, but it contains different payload and activates at different time.

Did you know?

The phrase "No Pasaran!" ("They shall not pass!") is referring to a famous speech given by Dolores Ibarruri, a Spanish freedom fighter. It was appeared in her radio speech in 1936.

References

Description of Spanska, F-Secure Labs

See also

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