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Possible Double Infection by CTB Locker and CryptoWall 3.0


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#1 dimpling

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Posted 27 January 2015 - 08:21 PM

I think my computer was infected by both CTB Locker and CtryptoWall 3.0. Here are the events happened in order:

1. We first notice the computer ran very slowly.

2. The typical ransom page from CTB Locker showed up with 96 hours time window.

3. My husband thought that it was a regular virus and removed it with trend micro. But he did take a picture of the computer screen with the ransom page.

4. All files were encrypted.

5. I did some research and restarted the computer in safe mood.

6. After restarting the computer in the safe mood, saw the help_decrypt.txt on the desk top. It is a ransom note from CryptoWall 3.0.

7. A further search showed that CryptoWall 3.0 files showed in many folder with a time stamp around 1/25/15 8pm. With such folders, sometimes you can find the CTB Locker ransom page bmp file (Decrypt All Files uklqglj.bmp).

 

So my questions are:

A. How do I know that which files are encrypted by CTB Locker, and which files are encrypted by CryptoWall 3.0?

B. Is it possible that a file is encrypted twice by both malwares?

 

I originally intended to pay the ransom. But after discovering the co-existence of both CTB Locker and cryptowall 3.0, I am not sure whether even paying both would work for me.

 

Any help or advice?

 

Best regards,

Katherine



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#2 quietman7

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Posted 27 January 2015 - 08:32 PM

:welcome: to Bleeping Computer Katherine.

You posted the same information here. There is no need to create a separate topic as that topic is for discussion and support. To avoid confusion and keep topics manageable for staff, I am closing this one.
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