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Need to know what to delete in pc infected with CTB-Locker


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#1 rickylane

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Posted 23 June 2015 - 06:37 PM

I believe I became infected on 6/21/15.  I remember looking at email from Big Lots, Swanson Products and Komando.com. I read the information guide on CTB-locker.  I checked some rtfs and the file type was changed to nfrbbmh.  I went to the Task Scheduler and deleted a job that pointed to a application file in the %TEMP% file which I also deleted.  My questions are

  Can I delete everything in the %TEMP% file.  Is it all Unnecessary?

  I used CCleaner, Malwarebytes (free version) and Windows Defender.  They identified no viruses.

  How can I delete the Ransom Screen?  I did delete 2 files in the Document library.

 

I did the above on 6/22/15 and on 6/23/15, I got the Ransom Screen and see that the entries are back in the Document library.  I got into my pc using safe mode to read more on this issue and post.



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#2 quietman7

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Posted 23 June 2015 - 07:21 PM

A repository of all current knowledge regarding this infection is provided by Grinler (aka Lawrence Abrams), in this topic: CTB Locker and Critroni Ransomware Information Guide and FAQ

Unfortunately there is no fix tool and no known method to retrieve the private key that can be used to decrypt your files without paying the ransom. With dual infections, that means paying both ransoms. Brute forcing the decryption key is not a realistic option.

CTB Locker will attempt to delete all Shadow Volume Copies when you first start any executable so that you cannot restore your files via System Restore or using a program like Shadow Explorer...but it never hurts to try in case the infection did not do what it was supposed to do. You may may even be able to use file recovery software such as R-Studio or Photorec to recover some of your original files.

There is also an ongoing discussion in this topic: CTB Locker Ransomware Support & Discussion.

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 support topic discussion. Doing that will also ensure you receive proper assistance from our crypto malware experts since they may not see this thread. To avoid unnecessary confusion...this topic is closed.

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