Papa, Poppa, Pappa, Bubba


X97M/Papa is an Excel 97 macro worm. It's quite similar to the widespread W97M/Melissa virus, but is probably not written by the same writer.


Automatic action

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

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Knowledge Base

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User Guide

See the user guide for your product on the Help Center.

Contact Support

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Submit a sample

Submit a file or URL for further analysis.

Technical Details

The Papa.A variant has a serious bug in it's code and it does not work. This bug was fixed in the Papa.B variant which is able to spread via Internet.

Every time when a XLS file infected by Papa is opened, it emails a copy of itself via email, using Microsoft Outlook, to the first 60 people in the Address Book.

The email sent by the worm looks like this:

From: (name of infected user)
 To: (60 names from alias list of the infected user)
 Subject: Fwd: Workbook from and Fred Cohen
 Urgent info inside.
Disregard macro warning.
 Attachment: XPASS.XLS

If the attached file is opened, it looks like this:

It is important to notice that Dr. Fred Cohen and the website at have nothing to do with the worm. Authors of this worm simply want to harass him. In addition, the worm will try to overload the web server by repeatedly pinging it.

The worm won't spread further to other XLS files, it just mails XPASS.XLS around.

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