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How do I recover encrypted files (Cryptolocker)?


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5 replies to this topic

#1 Micky Mouse

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Posted 06 April 2015 - 08:42 AM

Just today, my laptop was infected with Cryptolocker (looks like this). I don't know what I did or downloaded for this virus to just appear. I searched everywhere on how to recover my files but I found nothing I can use. My laptop's OS is still Windows XP so a few recovery apps are not useful. How do I recover my files without having to pay for the ransom? I desperately need help cause my thesis all my data are in here and it's  due in two weeks. I tried uploading an encrytped file here https://www.decryptcryptolocker.com but it says the file is apparently not encrypted.

I have also heard about cryptoplocker being dead anymore and the ones appearing now are copycats so yeah. Please help.


Edited by hamluis, 06 April 2015 - 09:13 AM.
Moved from AII to General Security - Hamluis.


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#2 Aura

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Posted 06 April 2015 - 09:00 AM

Hi Micky Mouse :)

The original CryptoLocker infection was shut down by the Operation Tovar that targetted the GameOver ZeuS botnet, so it's not being distributed anymore. However, there's a copy-cat that calls itself "PClock" with a ransom note similar to CryptoLocker. You can see the discussion thread for it here:

New PClock CryptoLocker Ransomware discovered

Fabian Wosar from Emsisoft worked on a decrypted for files encrypted with PClock. The recovery ratio isn't 100% but it's still worth a shot. You can read more in his post here.

Edited by Aura., 06 April 2015 - 09:17 AM.

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#3 hamluis

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Posted 06 April 2015 - 09:10 AM

A repository of all current knowledge regarding Cryptolocker is provided by Grinler (aka Lawrence Abrams), in this tutorial: CryptoLocker Ransomware Information Guide and FAQ

Reading that Guide will help you understand what CryptoLocker Ransomware does and provide information for how to deal with it and possibly recover your data.

There is also a lengthy ongoing discussion in this topic: Cryptolocker Hijack program. Since this infection is so widespread, rather than have everyone start individual topics, it would be best (and more manageable for staff) if you posted any questions, comments or requests for assistance in that topic discussion.

If you only need removal instructions, refer to Malwarebytes Anti-Malware Removal instructions for CryptoLocker.

Thanks.

 

The BC Staff


Edited by hamluis, 06 April 2015 - 09:12 AM.


#4 Micky Mouse

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Posted 06 April 2015 - 09:50 AM

Thanks for the reply. I tried the emsisoft decryptor but it I cannot open it. Anyways I hope people in the thread you recommended can help me.



#5 Aura

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Posted 06 April 2015 - 09:50 AM

Post in the Support thread I linked and let Fabian knows about it, he'll assist you with making the decrypter work :)

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#6 quietman7

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Posted 06 April 2015 - 10:23 AM

Thanks for the reply. I tried the emsisoft decryptor but it I cannot open it. Anyways I hope people in the thread you recommended can help me.

Yes that is the way to proceed. Rather than have everyone start individual topics, it is best (and more manageable for staff) to post any questions, comments or requests for assistance in the applicable topic discussion. This thread will now be closed.

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