Threat Description

Papa

Details

Aliases: Papa, Poppa, Pappa, Bubba
Category: Malware
Malware
Type: VirusVirus
Platform: X97M
W97M

Summary



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.



Removal



Automatic Disinfection

Allow F-Secure Anti-Virus to disinfect the relevant files.

For more general information on disinfection, please see Removal Instructions.



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 e-mails a copy of itself via e-mail, using Microsoft Outlook, to the first 60 people in the Address Book.

The e-mail 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 all.net 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 all.net 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 all.net web server by repeatedly pinging it.

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





Technical Details: Mikko Hypponen and Katrin Tocheva, F-Secure


SUBMIT A SAMPLE

Suspect a file or URL was wrongly detected? Submit a sample to our Labs for analysis

Submit Now

Give And Get Advice

Give advice. Get advice. Share the knowledge on our free discussion forum.

Learn More