Virus Database

Dicker.400

Description Dicker.400

It's a harmless memory resident parasitic virus. It hooks INT 21h and writes itself to the beginning of COM-files (except COMMAND.COM) that are executed. It contains the internal text strings:
Dicker 1.0
C:COMMAND.COM

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Rikki family

Description Rikki family

These are not dangerous nonmemory resident parasitic viruses. They search for .COM files, then writes itself to the end of the file. While infecting a file they temporary rename it with COx (x=FFh) extension. To rename file the viruses do not call any DOS function, but make it by absolute disk read/write calls (INT 25h/26h) - the viruses read directory entry, search for file name, patch it and then write directory sector back to disk.
The viruses display the messages:
"Rikki.839":
Demo virus #1 by Rikki Cate 21/9/90
File infected:
Press key to continue

"Rikki.1787":
Demo virus #3 by Rikki Cate 21/9/90
File infected:
Press key to continue

"Rikki.1970"
Demo virus #2 by Rikki Cate 21/9/90
File infected:
Press key to continue
PC-cillin has been replaced by a demonstration virus. To activate the
virus, reboot the computer.
PC-cillin has been replaced by a demonstration virus.
This message could easily duplicate the PC-cillin start-up screen.
The virus is now resident in memory in place of PC-cillin. It
will emulate the PC-cillin display and command keys. It will also
infect any .COM programs which are accessed by interrupt 21 hex.
Press any key to continue.

Riluttanza.689

Description Riluttanza.689

It is not a dangerous nonmemory resident parasitic virus. It searches for .COM files and writes itself to the end of the file. It contains the text strings:
E-RILUTTANZA (C) '92 by GROG - Italy
>>11/92<<

While infecting if two first bytes of the file are NOP,NOP instructions the virus displays:
Sebbene suo marito andasse spesso in viaggio per affari,
ella odiava star sola.
"Ho risolto il nostro problema", disse egli.
"Ti ho comprato un San Bernardo. Si chiama Estrema Riluttanza."
"Adesso, quando vado via, sai che ti lascio con Estrema Riluttanza!"
Ella lo colpi' con un mestolo.

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