CryptoLocker

Discussion in 'malware problems & news' started by DX2, Sep 10, 2013.

  1. siljaline

    siljaline Registered Member

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    CryptoLocker gang casts tentacles into botnet crime world
    http://www.networkworld.com/news/2013/112213-cryptolocker-276302.html
     
  2. siljaline

    siljaline Registered Member

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    Forensics Method Quickly Identifies CryptoLocker Encrypted Files
    http://threatpost.com/forensics-method-quickly-identifies-cryptolocker-encrypted-files/103049
     
  3. Dragon1952

    Dragon1952 Registered Member

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    Last edited: Dec 6, 2013
  4. Reality

    Reality Registered Member

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    Heard on the news this a.m. (NZ) that Cryptolocker hit 3 times in 2 weeks here. 2 were small businesses. That doesnt seem very many to me. They went on to say most compromised systems overall since Cryptolockers inception were XP OS's then they said it was because people were clicking on attachments in emails. So whats that got to do with what OS youre using. What do you guys think about XP and Cryptolocker?
     
  5. Rmus

    Rmus Exploit Analyst

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    Not much to think about...

    A typical comment in the analyses is this:
    From bleepingcomputer [assuming someone actually opens|runs the attachment]:

    CryptoLocker Ransomware Information Guide and FAQ
    http://www.bleepingcomputer.com/virus-removal/cryptolocker-ransomware-information
    And from Microsoft 12 years ago:

    Providing a Secure eXPerience
    http://msdn.microsoft.com/en-us/library/ms974604.aspx
    October 8, 2001
    And so it goes...

    -rich
     
  6. siljaline

    siljaline Registered Member

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    CryptoLocker ransomware survives hacktivists' takedown
    http://www.theregister.co.uk/2013/12/06/cryptolocker_takedown_fizzles/
     
  7. Reality

    Reality Registered Member

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    Rmus thankyou.
     
  8. Rmus

    Rmus Exploit Analyst

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    You are welcome, Reality!

    -rich
     
  9. siljaline

    siljaline Registered Member

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  10. HAN

    HAN Registered Member

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  11. siljaline

    siljaline Registered Member

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    You're most welcome, will pass along your comments.
     
  12. Peter2150

    Peter2150 Global Moderator

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    Don't need 11 things. Just browse with Sandboxie. I actually encountered the little pest earlier in my web browsing. It really tries to lock up the browser. Killed it with the sandboxie icon by closing the browser and letting it delete the sandbox.

    Nothing encrypted. Then scanned with the Emsisoft Emergency toolkit. System was clean.

    Pete
     
  13. J_L

    J_L Registered Member

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    I'd like to investigate how it actually tried to lock up the browser.
     
  14. wat0114

    wat0114 Registered Member

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    I'm most intrigued by this...

     
  15. Peter2150

    Peter2150 Global Moderator

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    Not sure I can help, as I don't know where I picked it up. I just happened to notice it in the taskbar with Firefox suddenly having two pages. Couldn't get rid of it except by kill Firefox with Sandboxie.

    Pette
     
  16. J_L

    J_L Registered Member

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    Sounds like JavaScript, not sure how that would be related to CryptoLocker.
     
  17. wat0114

    wat0114 Registered Member

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    I was thinking the same, such as a drive-by download. Maybe a vulnerability on a website was exploited? Interesting because the primary delivery method of Cryptolocker has been via email.
     
  18. Peter2150

    Peter2150 Global Moderator

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    I agree, but it had all the classic cryptolocker payment stuff.

    I did a simulation experiment later on.

    I took a snapshot with AX64, then put two PDF files on my desktop. Then took another AX64 snapshot. Install AxCrypt which encrypts files, test to make sure it was working.

    Then started explorer in Sandboxie and right clicked the files to encrypt them. The files changed in explorer to the encrypted files, but the ones on the desktop were okay. Deleted the Sandbox and that was it.

    Then I just encrypted the ones on the desktop. So now without the password they were lost. Restored that 2nd AX64 snapshot and the files were back.
    Restored the 1st snapshot, and the installation of Axcrypt was gone.

    So obviously besides SBIE, backup is important. I use AX64 as I can take a snapshot in about a minute, and the restore is also about a minute plus reboot.

    Appguard is another solution also.

    Pete
     
  19. CloneRanger

    CloneRanger Registered Member

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    No problem bro – ransom decryption service

    August 20th, 2013

    http://blog.avast.com/2013/08/20/no-problem-bro-ransom-decryption-service


     
  20. Dermot7

    Dermot7 Registered Member

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  21. Sm3K3R

    Sm3K3R Registered Member

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    Are Linux users protected against this ?!
     
  22. SouthPark

    SouthPark Registered Member

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    From what I have read , Crypto locker is only a Windows executable.
     
  23. erikloman

    erikloman Developer

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    Cryptolocker will also encrypt files shared by Linux or MacOS.
     
  24. Sm3K3R

    Sm3K3R Registered Member

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    But will it have access to the non mounted ?!
    I presume it will most likely attack Home partition or something like that ?!
     
  25. wat0114

    wat0114 Registered Member

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    I think if you are running a Windows virtual machine infected by Cryptolocker within a linux host environment, then the targeted file types residing on Linux may be encrypted, as long as the vm has file access to them.

    Otherwise, If like me you run Windows & Linux in a dual-boot setup, I don't believe the targeted file types on the unbooted ext 3/4 Linux partitions could be affected. I'd like to know for sure, though.
     
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