Earlier today you received an e-mail stating that Command AntiVirus
Deffiles were updated 5/19/00, including detection for VBS/NewLove.A,
a
destructive worm that is currently spreading in-the-wild.We strongly
recommend that you update Command AntiVirus Deffiles.
Note: VBS/NewLove.A will arrive as an attachment with a .VBS extension
in
an e-mail with FW: in the subject line. It is strongly recommended
that
you do not open e-mail matching these criteria.
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ADDITONAL DEFFILES DOWNLOAD LOCATIONS
We have posted Command AntiVirus Deffiles to additional public
locations to allow for easier access. If you have not updated
your
Deffiles yet, use one of the links below:
http://www2.commandcom.com/files/deffiles.exe
ftp://www.command.co.uk/public/deffiles.exe
ftp://ftp.medianet.ca/deffiles.exe
---------------------------------------------
Note: This worm will arrive as an attachment with a .VBS extension
in an
e-mail with FW: in the subject line. It is strongly recommended
that you
do
not open e-mail matching these criteria.
============================
DESCRIPTION: VBS.NewLove.A
VBS.NewLove.A is a VBScript worm that e-mails itself to all addresses
in
the
Microsoft Outlook address book on an infected system. This worm
has a
destructive payload, attempting to overwrite, and therefore delete
files
on
local and network drives. Command AntiVirus Deffiles posted 5/19/00
will
detect the VBS.NewLove.A worm.
Polymorphic in nature, VBS/NewLove.A generates varying attachment
names
and
subject lines with each iteration, using recently opened file
names are
used
by the worm to create them.
Upon execution, the virus drops a copy of itself in the Windows
and
Windows\System directories. This filename is randomly generated.
VBS/NewLove.A then creates values for these files in the following
registry
keys:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunServices
It then searches the Windows\Recent sub-directory, selects a file
at
random
and creates a new copy of itself, using the found filename and
adding a
random erroneous extension plus the extension .vbs. (The erroneous
extension
preceding the actual .vbs will be one of the following: Doc,
Xls, Mdb,
Bmp,
Mp3, Txt, Jpg, Gif, Mov, Url, Htm, or Txt). If no files exist
in
Windows\Recent, this filename will be randomly generated. Additionally,
the
virus is polymorphic, adding several lines of random text to
this new
file.
In essence, the attachment will increase in size with each subsequent
infection, thus the effect on mail servers is two-fold. This
file is then
sent to everyone in the Microsoft Outlook address book. The message
appears
as follows:
Subject: FW: filename
where filename corresponds with the name of the original file
chosen from
Windows\Recent plus the random extension. Body: There is no text
in the
body of the message. The attached file will carry the actual
.vbs
extension, preceded by the randomly created and erroneous extension.
VBS/NewLove.A then searches the local drives, creating new copies
of
itself
based on filenames found on the user's drives, deleting the originals
or
overwriting them with a zero byte file. This malicious aspect
of the
virus can destroy all files not currently in use by the operating
system.
VBS/NewLove.A relies on WSH (Windows Shell Script) to run.
Detection:
Command AntiVirus version 4.58.3 with deffiles dated May 19,
2000 or
above is needed to detect this worm.
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