Friday, April 13, 2007

WordMacro/Friday Friday the 13th virus in Microsoft Word with password

NAME : Friday
ORIGIN: Germany

WordMacro/Friday consists of several macros, all of which start with the text 'NOP'. However, the virus is not related to the WordMacro/NOP virus.

On every Friday the 13th the virus renames IO.SYS to I_O.SYS, making the machine unbootable if the operating system is Windows 3.x or Windows 95. On Friday the 13th the virus also encrypts all saved files with the password "Friday13".

In addition, the virus exits Windows between 11:00 and 11:59 on Saturdays, encrypts documents with a password equal to the last three letters of the document name on Saturdays, protect the document with a password equal to the first 4 characters of the document name on Thursdays before 11 or on Wednesdays, exits Windows on Wednesdays after 23:00, etc.

WordMacro/Friday was reported to be in the wild in Germany in January 1997.

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