Virus
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Thread: Virus

  1. #1
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    Virus

    Is there any type of file that can not have a virus at all?
    Or betther asking, What types of file that can have virus.
    The ones I now of.
    EXE. COM, BAT, PIF, PL.

    If you had to accept upload , what kind of extension would you accept?
    You are what you have conquered not what you have!

  2. #2
    They call me the Hunted foxyloxley's Avatar
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    .txt files are OK.
    open in notebook, as this does not support macro's.

    .jpeg are OK for the pix,

    again though, if you are unsure of the sender, DO NOT OPEN !!!

    It is entirely possible that in the near ? future that there will be NO safe files,
    only trusted addresses ?
    55 - I'm fiftyfeckinfive and STILL no wiser,
    OLDER yes
    Beware of Geeks bearing GIF's
    come and waste the day :P at The Taz Zone

  3. #3
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    .scr, .doc .xls, any file that can run a macro. vbs, wsh, js any script file. eml xml jar to name a few. its to early to think im going back to bed.
    Bukhari:V3B48N826 “The Prophet said, ‘Isn’t the witness of a woman equal to half of that of a man?’ The women said, ‘Yes.’ He said, ‘This is because of the deficiency of a woman’s mind.’”

  4. #4
    Master-Jedi-Pimps0r & Moderator thehorse13's Avatar
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    Just to add a little more...

    A good rule of thumb is that files that cannot execute code, typically are not going to carry a virus. As someone already mentioned, TXT files are a good example. To flip the coin, a good way to look at virus code is to use an app that can't execute code. Notepad is a typical candidate for this.

    --TH13
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  5. #5
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    every file type. I dont meen the real virus itself but (darkhats not good ) hackers can use binders and stick a gif jpg and any other files with the virus making it look like another file type. the file other than the virus will be seen while the virus has been set to run hidden



    ps: dont know if this has been said already sorry


    another ps : dont open offline web pages the virus code can be inserted into the webpage

  6. #6
    I was just reading an article about how JPEGs are/would be great holders of virii because people do not consider them a threat because they are non-executable.

    Is there any type of file that can not have a virus at all?
    No.

    -Cheers-

  7. #7
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    nonesens or not

    Recently an ISP in my country(Planet internet) has been advertising for virus free music

    I thought that was bullshit because a mp3, wma or ogg does not execute any
    code it is read by a program that play's music. But you guys made me doubt
    is it possible now or in the near future that a music file could hold a virus AND
    get that virus executed on my computer.
    Since the beginning of time, Man has searched for the answers to the big questions: \'How did we get here?\' \'Is there life after death?\' \'Are we alone?\' But today, in this very theatre, you will be asked to answer the biggest question of them all...WHO LIVES IN A PINEAPPLE UNDER THE SEA?

  8. #8
    Senior Member Raion's Avatar
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    Well one question..if you can hide virus's in a .jpg/.gif then can't the virus simply be executed through <img src>? :-/
    WARNING: THIS SIGNATURE IS SHAREWARE PLEASE REGISTER THIS SIGNATURE BY SENDING ME MONEY TO SEE THE COMPLETE SIGNATURE!

  9. #9
    I am not exactly sure how it works, but i have a feeling it is used more to store stuff because images are or can be quite large so adding stuff is less noticed I suppose.

    -Cheers-

  10. #10
    HeadShot Master N1nja Cybr1d's Avatar
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    quote:
    Is there any type of file that can not have a virus at all?


    No.

    wrong...we just mentioned that .txt files are pretty safe when it comes to Virii.


    JPG (JPEG) -- a "Proof of Concept" Virus

    What is a "Proof of Concept" virus, and should you be worried about this one?

    A "Proof of Concept" virus is one that is written by a person with advanced programming skills, to demonstrate that something new can be accomplished. Most often, they are sent to an anti-virus vendor, as if to say, "So there!" and no others are created, except by amateur vandals who produce and circulate hacked copies.

    The reality of going from a proof of concept to an everyday concern takes time, and does not always work. Concept (the first Macro virus) was gleefully presented to the AV companies in 1995, and until Microsoft strengthened MS-Word, macro viruses were the "in" thing with virus writers (and vendors' sales/advertising teams). In the two years the Microsoft ignored the real problem (even calling Macro viruses a prank), thousands of Word macro viruses were created.

    Another success story for virus writers was Bubbleboy, a script worm, distributable by e-mail. Thanks to the strength of VisualBASIC, the simplicity of using it to create worm programs, and the lack of defenses built into Outlook Express, its descendants made reading e-mail a risky proposition for some time.

    But the failures among proof of concept viruses constitute a much longer list. There was LaRoux, again spoon-fed to the AV people in 1995, for Excel, but Excel viruses require sharing of spreadsheets, so those did not get far. A few hacked variants were made from it, but no virus writer would waste his time creating one today.

    Other proofs of concept are mere curiosities today, like a macro virus written for Word Perfect. That one failed, because unlike MS-Word, Word Perfect's macros were not embedded in the document, obliging one to share and open two separate files. Proof of concept viruses were written for Ami Pro and PowerPoint, even Java, but those failed, too.

    Same flaw here. One must run an infected EXE in order for the system's registry to be altered to run the EXE, whenever one clicks on a JPG. That is NOT a real problem. As careful people have been doing, do NOT run any "donated" EXEs, and you will be 100% safe. Clicking on a JPG will not matter.

    When the day comes (if it ever does) that the entire virus is made part of, (or more likely, appended to) a JPG, clicking on a JPG will involve some risk. But we are not there yet, and not many virus writers have the skill level to accomplish that, anyway, IMHO.

    Even if things get that far, not clicking on a JPG like a robot which one should not do now, anyway (in case of a fake double extension, like .JPG.EXE), but using a program (like a Web browser) to open it should defeat any such virus, because (as far as I know) all such programs read only the JPG's code, not executable code, and software producers are not going to re-write their programs to accommodate the virus code.

    The bottom line: do not worry about JPG viruses, until there is something to be worried about

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