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----Original Message-----
From: Murry, Jim
Sent: Monday, September 27, 1999 7:16 AM
To: all-hs
Subject: New PC viruses
Importance: High
Two new viruses have sprouted up over the past week that are worth
noting. If you are using our Exchange/outlook email system and using our anti-virus
software package rolled into our Desktop/98 workstation you should be ok. Remember: if you
don't know the sender or exactly what an attachment is do not open an attachment!
Note: your system (Desktop/98 users) s/b on
version 4.0.3 of the McAfee Vshield software (to check click on the shield icon on the
bottom right of your screen and then click "about" - at the top of the window
that appears it should show the version of McAfee Vshield). If you are not on this version
please send an email request to hsishelp@uci.edu
<mailto:hsishelp@uci.edu> (in your email directory under "hsishelp")
asking that someone upgrade your system.
The two new viruses:
#1 Microsoft Y2K Trojan Horse
<http://www.ucihs.uci.edu/antivirus/viruses/explorerzip.html> virus. Masked as
an email from Microsoft, the Y2K countdown Trojan is distributed as an attachment
called Y2KCOUNT.EXE.. Masked as an email from Microsoft, the Y2K countdown Trojan is
distributed as an attachment called Y2KCOUNT.EXE. The mail seems to be coming from
Microsoft and contains the following text: From: support@microsoft.com Sender: support@microsoft.com Subject: Microsoft
Announcement Date: Wed, 15 Sep 1999 00:49:57 +0200 To All Microsoft Users, We are excited
to announce Microsoft Year 2000 Counter. Start the countdown NOW. Let us all get in the 21
Century. Let us lead the way to the future and we will get YOU there FASTER and
SAFER. Thank you, Microsoft Corporation When the Y2KCOUNT.EXE file is executed, it
displays a WINZIP self-extracting dialog box and a bogus message box containing the
following text appears: Password protection error or invalid CRC32! The Trojan then drops
the files PROCLIB.DLL, PROCLIB.EXE, PROCLIB16.DLL and SVSRV.DLL into the Windows System
directory and makes changes to the SYSTEM.INI file. It overwrites WSOCK32.DLL with the
contents of PROCLIB16.DLL, and keeps a copy of the original WSOCK32.DLL as a file called
NLHVLD.DLL. PROCLIB16.DLL mimics the functionality of WSOCK32.DLL and appears to search
for the words "password", "login" and "username" in incoming
and outgoing mail.
#2
W97M/Suppl is a new Internet worm, discovered 9/17/99 by AVERT's Virus Patrol. AVERT has
assigned it a MEDIUM risk assessment, and placed it on the AVERT Watch List. Like W32/Ska,
it attempts to infect other computers by attaching itself (as the file SUPPL.DOC) to
outgoing email messages using SMTP protocol. If you receive an email with an attachment
called
> SUPPL.DOC, DO NOT OPEN the attachment. Delete it immediately. W97M/Suppl has a
destructive payload: At infection, the virus replaces the existing WSOCK32.DLL file with a
new version that contains a trojan. Approximately 163 hours (6.79 days) after initially
infecting the local machine, the corrupted WSOCK32.DLL will seek all files within all
fixed drives with the following extensions and null them (similar to W32/ExploreZip):
.doc, .xls, .txt, .rtf, .dbf, .zip, .arj, .rar, *.*
Thank you.
Jim Murry
Chief Information Officer / Associate Director - UCI HealthSciences - <jmmurry@uci.edu> (714)456-6818 <http://www.ucihs.uci.edu/>
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