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Gpcode.ak encrypts files with various extensions including, but not limited to, .doc, .txt, .pdf, .xls, .jpg, .png, .cpp, .h and more using an RSA encryption algorithm with a 1024-bit key.  Kaspersky Lab analysts succeeded in thwarting previous variants of Gpcode, when Kaspersky virus researchers were able to crack the private key after in-depth cryptographic analysis.  The author of Gpcode has taken two years to improve the virus: the previous errors have been fixed and the key has been lengthened to 1024 bits instead of 660 bits.

At the time of writing, Kaspersky Lab is unable to decrypt files encrypted by Gpcode.ak since the key is 1024 bits long.  Thus, the only way currently to decrypt the encrypted files is to use the private key which only the author has available at a fee.

"With this new version of Gpcode, we've encountered ransomware which seems impossible to crack during this early stage of detection.  Next to running anti-malware solutions the best measure to fight this kind of malware is to regularly create back-ups of the files stored on the computer," said Roel Schouwenberg, Senior Anti-Virus Researcher, Kaspersky Lab.   "We strongly discourage infected people to pay the ransom as this will only encourage the author to create new versions."

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The virus generates a key specific to your computer and encrypts that key with the virus author's public key.  To decrypt your files, you have to send the encrypted computer specific key to the author to receive the decrypted key. Beautiful.  Except the author neglected to securely delete the plaintext files so you can use any file recovery program to get most of your files back.

Does anyone know where I download this virus? If you find a link, pm it to me so people don't click on it. o.o  I want to test it on a virtual machine.  I've tried the previous versions, but I can't seem to get them to run.

Post edited at 12:44 pm on Nov. 5, 2008 by shadowpool

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You create your past.

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Such a hacker lol

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Quote: from superchris4000 at 3:48 pm on Nov. 5, 2008

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Such a hacker lol

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Programmer*
lol

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Its a fine line.

I might know someone who has it, but hes probably asleep right now.

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Design By Humans