Welcome to the Virus Encyclopedia of Panda Security.
Tristate.A is a macro virus that adds the text <–1nternal–> Triplicate v0.21 /1nternal in infected to the Word documents it infects.
In addition, it infects Word 97 documents (files with a DOC extension), Excel 97 spreadsheets (files with an XLS extension) and PowerPoint presentations (files with a PPT extension).
Tristate.A reaches computers in an infected Word 97 document (a file with a DOC extension ), through the usual means of transmission. Once activated, it infects the Word 97 global template (NORMAL.DOT file) and other documents.
Tristate.A inserts the following text in the Word documents it infects:
<–1nternal–> Triplicate v0.21 /1nternal
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