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Author Topic: BIOS Virus  (Read 5345 times)

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Zylstra

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BIOS Virus
« on: March 06, 2007, 05:11:06 PM »
What is a BIOS Virus?
Are they preventable? (besides having an AV scanner)
Are they common, or were they at one time?
Are new computers exposed to them?
What damage do they cause?
Is it difficult to make a program or malicious code that can access the BIOS?

A bit questioning today - Zylstra555

GX1_Man

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Re: BIOS Virus
« Reply #1 on: March 06, 2007, 06:25:25 PM »

patio

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Re: BIOS Virus
« Reply #2 on: March 07, 2007, 09:30:50 AM »
You're probably thinking of a boot sector virus...not as common as they used to be but are going through a resurgence as the newest batch of malicious idiots are cutting their chops in the malware world.
They are particularly hard to get rid of and usually need a floppy based AV to sniff them out and remove them or a complete low-level format and re-partitioning of a HDD in extreme cases.
" Anyone who goes to a psychiatrist should have his head examined. "

Zylstra

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Re: BIOS Virus
« Reply #3 on: March 07, 2007, 02:15:36 PM »
Quote
You're probably thinking of a boot sector virus...not as common as they used to be but are going through a resurgence as the newest batch of malicious idiots are cutting their chops in the malware world.
They are particularly hard to get rid of and usually need a floppy based AV to sniff them out and remove them or a complete low-level format and re-partitioning of a HDD in extreme cases.
No, not thinking of an MBR virus.
(Easy fix for those since I had a problem with a Windows 3.0 instalation disk at one point:
fdisk /mbr
re-writes the Master Boot Record. It can even clear a program like Lilo, so it can be problamatic)
After my research, (From GX1_Man's link to Google), I found out that they do exist, and that they can be quite dammaging.
I had an uncle who said at one time a long time ago that he had a BIOS virus, and I wanted to do more research on it some day. (now I know)
The BIOS are infected through the BIOS Updates (which, on many BIOS chips, can be dissabled to prevent such a virus)


Semysig



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    Re: BIOS Virus
    « Reply #4 on: August 19, 2009, 10:25:35 PM »
    No, not thinking of an MBR virus.
    (Easy fix for those since I had a problem with a Windows 3.0 instalation disk at one point:
    fdisk /mbr
    re-writes the Master Boot Record. It can even clear a program like Lilo, so it can be problamatic)
    After my research, (From GX1_Man's link to Google), I found out that they do exist, and that they can be quite dammaging.
    I had an uncle who said at one time a long time ago that he had a BIOS virus, and I wanted to do more research on it some day. (now I know)
    The BIOS are infected through the BIOS Updates (which, on many BIOS chips, can be dissabled to prevent such a virus)



    Does a rootkit stop an MBR virus, or scan for it?
    If not, can Avast or Panda scan ONLY the MBR.  I'm the guy with the cross partition deal.  So, I figure I'd hide partitions, but since the MBR will still be vulnerable I would scan for that before switching from dirter to clean partion (OS installs) and boot from CD to do the scan.  I woudn't get lazy then, hopefully, and blow it off cuz I don't have to do a whole scan :)_

    smeezekitty

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    Re: BIOS Virus
    « Reply #5 on: August 20, 2009, 12:14:14 AM »
    then dont update the bios
    i have never heard of a bios virus