W32.Erah.A@mm is a mass-mailing worm that sends itself to all the addresses in the Windows Address Book. The email message has the following characteristics:
Subject: The subject line will be one of the following:
FW: Your Hare is Balding
RE: You New Hare
FW: FW: FW: The Hare
Attachment: <original worm filename>
The above email routine will occur on the following days only:
January 1
February 14
April 1
April 21
July 4
August 12
October 1
November 14
December 25
Type: Worm
Infection Length: 17,408 bytes
Systems Affected: Windows 95, Windows 98, Windows Me
Systems Not Affected: Macintosh, OS/2, UNIX, Linux