Virus Database

Dotter.3961

Description Dotter.3961

It is not a dangerous memory resident encrypted parasitic virus. It hooks INT 21h and writes itself to the end of EXE files that are executed. While infecting a file the virus creates temporary file NCTEMP.TMP. Depending of system date the virus displays one of messages in Russian (total - about 3K of messages).

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Macro.Excel.Yohimbe

Description Macro.Excel.Yohimbe

This is an Excel macro virus. The only module (macro) in this virus is named "Exec", it contains three subroutines: Auto_Open, DipDing, PayLoad and one function: SheetExists. Auto_Open routine is auto one, it is called by Excel on opening any file. On this call the virus infects PERSONAL.XLS. In case of any error, the virus infects all active books (files). Before returning the Auto_Open macro sets the DipDing subroutine as a timer handler that is called starting from 4:00pm. This subroutine infects all opened books.
The virus writes the string "Yohimbe" to the sheet header. The virus also sets PayLoad subroutine as called starting from 4:45pm. This routine re-sizes active sheet, draws a picture and inserts the text "FUCK YOU BUDDY" into the sheet.

Macro.Excel97 Laroux, Legend, Lord, Robocop, Tjoro

Description Macro.Excel97 Laroux, Legend, Lord, Robocop, Tjoro

These viruses were converted to MS Excel97 from their MS Excel prototypes, and as a result they have the same set of macros, functions, features and effects. See their Excel prototypes.

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