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Malicious E-Mail
Melissa/Papa Viruses
More info on VIRUSES
A COMPUTER VIRUS is a program or piece of code that is loaded onto your computer
without your knowledge and runs against your wishes. Most viruses can also replicate
themselves. All computer viruses are manmade. A simple virus that can make a copy of
itself over and over again is relatively easy to produce. Even such a simple virus
is dangerous because it will quickly use all available memory and bring the system
to a halt. An even more dangerous type of virus is one capable of transmitting itself
across networks and bypassing security systems. (definition from webopedia.com)
A selection of anti-VIRUS programs are available for FREE at the
Software Download Zone
(download time optimized for SKY Internet subscribers).
Virus Update! Prilissa Macro Virus
On Friday, November 12th, Microsoft was made aware of a Word 97 macro virus
(dubbed "Prilissa") that affects Outlook and Outlook Express users. The macro
capability of MS Office applications allows customers and developers to extend its
functionality in useful ways. However, malicious hackers have recently taken
advantage of this macro functionality to create this harmful virus.
DETAILS
- What is the Prilissa macro virus?
- Will Office 97 or Office 2000 protect me...?
- How do I ensure that virus protection is on?
- How do I ensure I will not be infected?
- What should I do if I am infected...?
What is the "Prilissa" macro virus?
It is a Word 97 macro virus delivered via e-mail in an attached Word document
that can only affect users if the attachment is opened on December 25th. The e-mail
contains the subject line "Message From [UserName]" and/or contains the message body
"This document is very Important and you've GOT to read this!!!" If the attached
Word document is opened on December 25th and the macro virus is enabled (i.e. it is
allowed to run), it can propagate itself by sending e-mail with the infected document
to a number of recipients.
The virus reads a list of e-mail addresses from the Outlook Address Book and sends
an e-mail message to the first 50 recipients programmatically. The virus also can
reformat the hard disk drive of Microsoft Windows 95 or Windows 98 computers and will
overlay the attached document with random shapes.
Will Office 97/Office 2000 protect me from this and other macro viruses?
Yes. Microsoft Office applications, including Microsoft Word and Microsoft Excel
are designed to protect you from macro viruses, including the "Prilissa" virus and any
variants, provided the macro virus protection in these applications is turned on
(which is the default setting). With the macro virus protection turned on, every
time you open a document that contains macros, a dialog box appears and asks you to
choose whether to enable or disable included macros. You should always disable macros
when you are not certain of their purpose or functionality. By choosing to disable
the macros, you will prevent any macro viruses from running, preventing infection by
the virus. The virus is only activated if you open the attached document and choose
to enable the macros, or if your macro virus protection settings have been previously
turned off and you open the attachment.
It should be noted that even if the message containing the virus is not opened,
it could still infect others if it is forwarded. To minimize risk from this virus and
to prevent spreading the virus further, if you receive e-mail with the above-mentioned
attachment and/or subject line, you should delete it immediately without opening the
message.
How do I ensure the Office macro virus protection is turned on?
In Word 97 and Excel 97 (1.) On the Tools menu, click Options. (2.) On the
General tab, check Macro Virus Protection. In Word 2000 and Excel 2000 Double-click
the Tools menu, point to Macro and then choose Security. Select the level of security
you want. High security will allow only macros that have been signed to open. Unsigned
macros will be automatically disabled. Medium security always brings up the macro
dialog protection box that allows you to disable macros if you are unsure of the macros.
Important Note: If you are not able to follow the steps above because you cannot
find the menu items, you may already be infected. If so, run anti-virus software
containing the latest update, and scan your system often. Support for this particular
virus is already available from a number of anti-virus companies (see more information
below). If you are not able to run anti-virus software, it will be necessary to
delete or rename your normal.dot file. This is the global template in Word, which will
automatically be recreated once Word is launched. After this is done, repeat the steps
above.
How do I ensure I will not be infected?
Make sure the Office macro virus protection is turned on as described above.
Always choose "disable macros" when asked, if you are unsure of the purpose of the
macro in the document. Doing so will still allow you to open the document and read
its contents. Once certain the macro is safe, and only if you need to run the macro,
you can then re-open the document and enable the macro. Run the latest anti-virus
software, and scan often. This is how you can ensure that the macros in documents
are safe. Disinfectors for this particular virus are already available from a number
of anti-virus companies.
Also remember to keep your anti-virus software up to date by installing the latest
signature files for that company. Call or e-mail the HELPDESK for more information.
Also, if you don't find the anti-virus software you are looking for in our Software
Download Zone, try going to TUCOWS.
What should I do if I have (or think I have) been infected by this virus?
Run anti-virus software containing the latest update, and scan your system often.
Support for this particular virus is already available from a number of anti-virus
companies. Make sure your Office virus protection is turned on. Once the Prilissa
virus has been allowed to run, it will disable the virus protection in Word 97.
Remember to make sure Office macro virus protection is turned on by performing the
steps listed above. Of course, if you have further questions, contact the 24-hour
helpdesk.
MALICIOUS E-MAIL
An e-mail message is being circulated bearing the subject:
"YOU HAVE WON 2 ROUNDTRIP TICKETS FROM BONUS"
The e-mail tells recipients to click on a file named BONUSX.EXE to "automatically
retrieve" the prize.
IF YOU RECEIVED THIS E-MAIL, DELETE IT IMMEDIATELY.
DO NOT CLICK ON THE ATTACHED FILE.
There is no prize to be claimed by clicking on the attached file. BONUSX.EXE is what
is known as a Windows Trojan or Back Orifice. Once installed, the security of your
system is compromised. (Macintosh users need not worry though since the MacOS is
immune from any virus embedded in .EXE or .DOC files.)
If you think you've installed this on your system, our Customer
Service Helpdesk would be ready to assist you in detecting and removing it.
MELISSA/PAPA VIRUSES
We would like to alert you of e-mail that have Word and Excel attachments.
There are viruses that are being spread rapidly called the Chernobyl, Melissa W97M
and Papa X97M viruses, which infects Word and Excel documents. (Good news for
Macintosh user's though since the MacOS is immune from any virus embedded in .EXE or
.DOC files.)
The best protection against macro viruses is to disable macros in your Microsoft
Office products, like Word and Excel. You can disable macros in Word and Excel by
checking the Macro Virus Protection check box under Tools | Options | General. With
this checked, you will be asked if you want to disable macros every time you open a
document. Never clear the "Always ask before opening documents with macros or
customization" check box.
For a comprehensive list of computer viruses, click here.
ANY VIRUS INFO YOU WANT TO SHARE?
Send it to content@skyinet.net.
Tips posted online will be attributed to the sender.