[unisog] What are doc.bin files?

DelVecchio, Anthony R. ARDELVECCHIO at stthomas.edu
Wed Jul 18 22:38:02 GMT 2001

Sounds like a way to sneak malicious code past e-mail filters.  Has anybody
virus checked or looked at one of these files?

Tony DelVecchio
Network Security Manager
University of St Thomas
St Paul, MN USA
"Power corrupts.  Absolute power is kind of neat."
John Lehman - Former Secretary of the Navy

-----Original Message-----
From: Barbara Inzina [mailto:binzina at mbl.edu]
Sent: Wednesday, July 18, 2001 4:30 PM
To: unisog at sans.org
Subject: [unisog] What are doc.bin files?

People here are starting to get email attachments with file names that
end in "doc.bin".

They are having trouble reading them.  They appear to be Word documents,
but the ".bin" confuses some of the email client programs.
Surfing to find out what they are, we found at least one web site that

"The file has been called guide.doc.bin to help ensure reliable download
using a web browser, but after downloading you should rename the file

Does anyone know what this is?   Was I asleep while a new technique for
encoding attachments was invented?

Barbara Inzina
Network Manager
Marine Biological Laboratory
Woods Hole, Massachusetts

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