As a part of the No More Ransom initiative, cybersecurity researchers at Avast Antivirus have released a decryption tool that allows you to retrieve the files locked by LambdaLocker without having to pay the ransom.
No More Ransom was launched in 2016, and they have been helping people fight against ransomware. Having celebrated their 1-year anniversary, they now have over 50 decryption tools available for use against 100+ ransomware families.
It is estimated that around 28,000 decryptions have taken place since launching the platform, effectively preventing millions of dollars from being siphoned into the pockets of cybercriminals.
Originally, the only way for LambdaLocker victims to regain access to their files was to pay 0.5 Bitcoins ($2,200) in return for a decryption key. However, the newer versions of this ransomware contain an error which allowed cybersecurity researchers to develop a decryption tool.
Unfortunately, this means that the new tool will only work for you if your computer is infected with the newest version.
Reportedly, LambdaLocker is distributed through email and malicious game installers. After becoming infected, the ransomware takes over the PC and displays a message notifying the user of the infection. The message also contains instructions on how to acquire Bitcoin and send it. It also attempts to pressure the victims into paying quickly by stating they only have one month to act, or they may lose access to their files forever.
Thankfully, due to the cryptography bug found in the latest version of this ransomware, its malicious developers are out of luck this time around.