Ransomware Malware Virus Removal Instructions Guide by Britec

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Uploaded by on Aug 6, 2011

Ransomware Malware Virus Removal Instructions Guide by Britec.co.uk

Ransomware is computer malware which holds a computer system, or the data it contains, hostage against its user by demanding a ransom for its restoration.

The first known ransomware was the 1989 PC Cyborg Trojan, which only encrypted filenames with a weak symmetric cipher. The notion of using public key cryptography for these attacks was introduced by Young and Yung in 1996 who presented a proof-of-concept cryptovirus for the Macintosh SE/30 using RSA and TEA. Young and Yung referred to this attack as cryptoviral extortion, an overt attack that is part of a larger class of attacks in a field called cryptovirology. Cryptovirology encompasses both overt and covert attacks.

Examples of extortive ransomware reappeared in May 2005. By mid-2006, worms such as Gpcode, TROJ.RANSOM.A, Archiveus, Krotten, Cryzip, and MayArchive began utilizing more sophisticated RSA encryption schemes, with ever-increasing key-sizes.

Gpcode.AG, which was detected in June 2006, encrypted with a 660-bit RSA public key. Gpcode.AK, detected in June 2008, uses a 1024-bit RSA key, which is believed to be large enough to be computationally infeasible to break without a concerted distributed effort.

News of new GpCode-like ransomware is surfacing and it is stronger than ever before with 1024-bit encryption.
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need help with removal?
http://www.briteccomputers.co.uk/forum
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http://www.britec.org.uk
http://www.pcrepairhertfordshire.co.uk

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Uploader Comments (Britec09)

  • WOW thanks for this video you showed me another way to remove malware i dont always have a bootable CD handy theres a lot of people who need to see this video

  • @wblake22 I try to show as many was as possible to remove malware.

  • Could you do a video on removing the News of new GpCode-like RansomWare?

    Also, enjoyed the video!

  • @mooselexus Trying to get a copy of that virus, as soon as I get a copy i will do a video on it.

  • Cool. Got 1 question to ask. Can I use an Ubuntu livecd to remove it manually? Thanks.

  • @hahacify as long as you can see the drive thats infected...then yes.

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All Comments (21)

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  • Great vid will be using this as a friend has just suffered one

  • thank you

  • what kinds of FREE boot cds are there?

  • Those Russians are crazy good programmers.

  • Looking forward to a video on removing new GpCode-like RansomWare! Moose!

  • thank you, keep up the good work!

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