Cryptolocker copycat targets US, European users
Posted on 13.12.2013
A Cryptolocker copycat has been spotted targeting users in the US, Europe and Russia, but it looks that this new ransomware is less deadly that the original that inspired its creation.

The malware was analyzed by experts from security company IntelCrawler, and they have discovered that the cryptographic toolkit used to encrypt the victims' files has flaws that can be exploited to create effective "skeleton keys" to decrypt them.

According to IntelCrawler CEO Andrey Komarov, they have already managed to develop these keys, and they can decrypt any infected client.

The ransomware - dubbed Locker - currently has an extremely low detection rate. Users get infected via drive-by downloads and by receiving and opening executables disguised as mp3 files.

Once the malware is on the target computer, it proceeds to encrypt files one by one, leaving the encrypted versions behind and deleting the non-encrypted ones.

It also places a text file containing instructions on what to do (pay up $150 to receive the key) and how to contact the criminals (via throwaway phone numbers and emails) in each computer directory.

After paying, the victims contact the criminals and give them their computer's hostname and the identifying code witten in the text file.

"It seems to be the hackers just compare the list of infected IP addresses of the users together with their hostnames," Komarov told The Register.









Spotlight

Implementing an effective risk management framework

How do we balance the benefit of the free flow of information with the risk of inappropriate access and/or disclosure? What are the consequences of not doing so?


Weekly newsletter

Reading our newsletter every Monday will keep you up-to-date with security news.
  



Daily digest

Receive a daily digest of the latest security news.
  
DON'T
MISS

Thu, Mar 26th
    COPYRIGHT 1998-2015 BY HELP NET SECURITY.   // READ OUR PRIVACY POLICY // ABOUT US // ADVERTISE //