file types required for a virus

  • Thread starter Thread starter Mark Kamoski
  • Start date Start date
M

Mark Kamoski

Hi Everyone--

Please help.

(1). Is it possible for a file with the extension of *.txt or *.jpg or
*.gif or * .png to contain a virus such that if a user simply opens the
file, the virus will run? And, is it at all likely?

So far, I've only seen "executable" extensions on virus email attachments,
for example-- *.pif, *.bat, *.exe, *.vbs, *.cmd and so on.


(2). Also, is it possible to have a virus in a plain-text email, with NO
attachment? And, is it at all likely?


What do you think?

What do you know?

(Note that I do know that it is impossible to answer these questions
absolutely due to changing hacker "skills". I am just looking for the
current, best-know answer.)

(My guess is that the answer to both questions is "no".)

Please advise.

--Mark
 
Maybe I should have said a little more

255 0 0 = RED (there are 2 places that 255x2 can be used to insert code)
255 255 0 =BLUE (there is space for 255 for inserting code)

don
-----------


Yes, there is a way to place code on images. They use the leftover places
when the colors don't use all of the spaces. Like 255 255 255 is stand for
white and a combination from 1 to 255 for any to vary the the color. They
are RGB (red, green, blue).
Why do you ask.?

don
----------




Hi Everyone--

Please help.

(1). Is it possible for a file with the extension of *.txt or *.jpg or
*.gif or * .png to contain a virus such that if a user simply opens the
file, the virus will run? And, is it at all likely?

So far, I've only seen "executable" extensions on virus email attachments,
for example-- *.pif, *.bat, *.exe, *.vbs, *.cmd and so on.


(2). Also, is it possible to have a virus in a plain-text email, with NO
attachment? And, is it at all likely?


What do you think?

What do you know?

(Note that I do know that it is impossible to answer these questions
absolutely due to changing hacker "skills". I am just looking for the
current, best-know answer.)

(My guess is that the answer to both questions is "no".)

Please advise.

--Mark
 
Am I screwed up or what.

255 255 0 = Yellow
0 0 255 = Blue

sorry,
don
---------



Maybe I should have said a little more

255 0 0 = RED (there are 2 places that 255x2 can be used to insert code)
255 255 0 =BLUE (there is space for 255 for inserting code)

don
-----------


Yes, there is a way to place code on images. They use the leftover places
when the colors don't use all of the spaces. Like 255 255 255 is stand for
white and a combination from 1 to 255 for any to vary the the color. They
are RGB (red, green, blue).
Why do you ask.?

don
----------




Hi Everyone--

Please help.

(1). Is it possible for a file with the extension of *.txt or *.jpg or
*.gif or * .png to contain a virus such that if a user simply opens the
file, the virus will run? And, is it at all likely?

So far, I've only seen "executable" extensions on virus email attachments,
for example-- *.pif, *.bat, *.exe, *.vbs, *.cmd and so on.


(2). Also, is it possible to have a virus in a plain-text email, with NO
attachment? And, is it at all likely?


What do you think?

What do you know?

(Note that I do know that it is impossible to answer these questions
absolutely due to changing hacker "skills". I am just looking for the
current, best-know answer.)

(My guess is that the answer to both questions is "no".)

Please advise.

--Mark
 
Hi Mark,

The virus experts hang-out in the two newsgroups carried on the Microsoft Server
(msnews.microsoft.com) with the word virus in the name. I suggest that you post to
one of those. I can tell by your Internet Header that you are posting to the
newsgroups using Outlook Express. So, "To find newsgroups of interest", and
"To add an e-mail or newsgroup account", search OLEXP Help for words in
double-quotes.

Also, the following Microsoft Knowledge Base Article, section "Attachment
Behavior", has an interesting list of extensions that may have script or code
associated with it.

KB290497 - OL2002: You Cannot Open Attachments
http://support.microsoft.com/?scid=290497

--
Carrie Garth, Microsoft MVP for Windows 2000
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- c x g

: "Mark Kamoski" <mkamoski AT yahoo DOT com>
: Wrote in message : Sent: Monday, September 22, 2003 1:42 PM
:
: Hi Everyone--
:
: Please help.
:
: (1). Is it possible for a file with the extension of *.txt or *.jpg or
: *.gif or * .png to contain a virus such that if a user simply opens the
: file, the virus will run? And, is it at all likely?
:
: So far, I've only seen "executable" extensions on virus email attachments,
: for example-- *.pif, *.bat, *.exe, *.vbs, *.cmd and so on.
:
: (2). Also, is it possible to have a virus in a plain-text email, with NO
: attachment? And, is it at all likely?
:
: What do you think?
:
: What do you know?
:
: (Note that I do know that it is impossible to answer these questions
: absolutely due to changing hacker "skills". I am just looking for the
: current, best-know answer.)
:
: (My guess is that the answer to both questions is "no".)
:
: Please advise.
:
: --Mark
 
Hi Carrie--

Thank you so much.

This list...

Extension File type
---------------------------------------------------
..ade Microsoft Access project extension
..adp Microsoft Access project
..asx Windows Media Audio / Video
..bas Microsoft Visual Basic class module
..bat Batch file
..chm Compiled HTML Help file
..cmd Microsoft Windows NT Command script
..com Microsoft MS-DOS program
..cpl Control Panel extension
..crt Security certificate
..exe Program
..hlp Help file
..hta HTML program
..inf Setup Information
..ins Internet Naming Service
..isp Internet Communication settings
..js JScript file
..jse Jscript Encoded Script file
..lnk Shortcut
..mda Microsoft Access add-in program
..mdb Microsoft Access program
..mde Microsoft Access MDE database
..mdt Microsoft Access workgroup information
..mdw Microsoft Access workgroup information
..mdz Microsoft Access wizard program
..msc Microsoft Common Console document
..msi Microsoft Windows Installer package
..msp Microsoft Windows Installer patch
..mst Microsoft Windows Installer transform; Microsoft Visual
Test source file
..ops Office XP settings
..pcd Photo CD image; Microsoft Visual compiled script
..pif Shortcut to MS-DOS program
..prf Microsoft Outlook profile settings
..reg Registration entries
..scf Windows Explorer command
..scr Screen saver
..sct Windows Script Component
..shb Shell Scrap object
..shs Shell Scrap object
..url Internet shortcut
..vb VBScript file
..vbe VBScript Encoded script file
..vbs VBScript file
..wsc Windows Script Component
..wsf Windows Script file
..wsh Windows Script Host Settings file


.....is exactly what I was looking to find....

.....(which, in case someone didn't notice, comes from the link
http://support.microsoft.com/?scid=290497 as of now)...


.....so, thanks again.

--Mark







Hi Mark,

The virus experts hang-out in the two newsgroups carried on the Microsoft
Server
(msnews.microsoft.com) with the word virus in the name. I suggest that you
post to
one of those. I can tell by your Internet Header that you are posting to
the
newsgroups using Outlook Express. So, "To find newsgroups of interest",
and
"To add an e-mail or newsgroup account", search OLEXP Help for words in
double-quotes.

Also, the following Microsoft Knowledge Base Article, section "Attachment
Behavior", has an interesting list of extensions that may have script or
code
associated with it.

KB290497 - OL2002: You Cannot Open Attachments
http://support.microsoft.com/?scid=290497

--
Carrie Garth, Microsoft MVP for Windows 2000
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- c x g

: "Mark Kamoski" <mkamoski AT yahoo DOT com>
: Wrote in message : Sent: Monday, September 22, 2003 1:42 PM
:
: Hi Everyone--
:
: Please help.
:
: (1). Is it possible for a file with the extension of *.txt or *.jpg or
: *.gif or * .png to contain a virus such that if a user simply opens the
: file, the virus will run? And, is it at all likely?
:
: So far, I've only seen "executable" extensions on virus email
attachments,
: for example-- *.pif, *.bat, *.exe, *.vbs, *.cmd and so on.
:
: (2). Also, is it possible to have a virus in a plain-text email, with NO
: attachment? And, is it at all likely?
:
: What do you think?
:
: What do you know?
:
: (Note that I do know that it is impossible to answer these questions
: absolutely due to changing hacker "skills". I am just looking for the
: current, best-know answer.)
:
: (My guess is that the answer to both questions is "no".)
:
: Please advise.
:
: --Mark
 
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