Macro.Word.Muck
Description Macro.Word.Muck
This macro virus contains six macros: AutoOpen, AutoClose, AutoNew, AutoExit, FileSave, FileSaveAs. It infects the global macros area on opening an infected document (AutoOpen) and writes itself to documents on saving them (FileSave, FileSaveAs).
Depending on system random counter the virus displays the MessageBox with the text: "MUCK".
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Rider.577
Description Rider.577
It is a dangerous nonmemory resident parasitic encrypted virus. It searches for COM files and writes itself to the end of the file. It deletes the files:
C:COMMAND.COM
C:DOSCOMMAND.COM
C:IO.SYS
C:MSDOS.SYS
It contains the text strings:
The iNFiLtRAtOR Virus by The Dark Rider from Norway-93
*.COM
RiftVilly family
Description RiftVilly family
These are harmless memory resident parasitic viruses. They hook INT 21h, and write themselves to the end of COM files. "RiftVilly.469" intercepts file access to DOS functions and infects COM files that are executed, opened or renamed; "RiftVilly.490" does the same with EXE files. "RiftVilly.480" intercepts a ChangeDir DOS function, and upon such calls, searches for .COM files in the current directory and infects them.
The viruses contain the following text strings:
"RiftVilly.469": Rift Villy v.3.4
"RiftVilly.480": Rift Villy v.3.1
"RiftVilly.490": Rift Villy v.4.0
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