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History and Evolution of TeslaCrypt Ransomware Virus

TeslaCrypt is a ransomware program that encrypts files that targets all Windows versions, including Windows Vista, Windows XP and Windows 7. The program was released for the first time towards the end of February 2015. When it is infected on your PC, TeslaCrypt will search for data files and encrypt them with AES encryption so that you will no longer be able to open them.



When all data files on your computer are infected, an application will be displayed with information on how to recover your files. There is a hyperlink in the instructions that connects you to a TOR Decryption Service site. The site will provide you with information on the current ransom amount, how many files have been encrypted, and how to make payment so your files can be released. The ransom usually starts at $500. It is payable in Bitcoins. There is a distinct Bitcoin address for each victim.



Once TeslaCrypt is installed on your computer, it generates an executable that is randomly labeled in the %AppData% folder. The executable is launched and begins to look through your computer's drive letters for files that need to be encrypted. It attaches an extension to the name of any supported data file it finds. The name is derived from the variant that has affected your computer. With the release of new variants of TeslaCrypt the program is using various file extensions to store the encrypted files. TeslaCrypt currently uses the following extensions for encrypted files:.cccc..abc..aaa..zzz..xyz. There is a chance that you could make use of the TeslaDecoder tool to decrypt your encrypted files free of cost. It is, of course, dependent on the version of TeslaCrypt that has infected your files.



TeslaCrypt searches for all drive letters on your computer in order to locate files that can be encrypted. It can scan network shares, DropBox mappings and removable drives. However, it is only able to target data files on network shares in the event that you have the network share assigned as an drive letter on your computer. If you don't have mapped the network share as a drive letter the ransomware won't encrypt the files on that network share. After scanning your computer it will erase all Shadow Volume Copies. The ransomware does this to stop you from restoring affected files. The ransomware's version is indicated by the application title that appears after encryption.



How TeslaCrypt infects your computer



TeslaCrypt infects computers if the user visits a hacked site that has an exploit kit and outdated software. To distribute this malware, hackers hack websites. An exploit kit is a special software program that they install. This tool exploits weaknesses in your computer's programs. Acrobat Reader and Java are only a few of the programs that are vulnerable. weaknesses. When the exploit kit is successful in exploiting the weaknesses on your computer, it will automatically installs and launches TeslaCrypt without your knowledge.



It is important to ensure that Windows and all other programs are up to date. This will safeguard your computer from weaknesses that could lead to infection with TeslaCrypt.



This ransom ware was the first of its kind to target data files that are used by PC video games actively. It targets game files from games like MineCraft, Steam, World of Tanks, League of Legends and Half-life 2. Diablo, Fallout 3, Skyrim, Dragon Age, Call of Duty, RPG Maker, and many others. It has, however, not been established whether game targets mean increased profits for the developers of this malware.



Versions of TeslaCrypt and the file extensions associated with it.



TeslaCrypt is regularly updated to include new encryption techniques and file extensions. The first version encrypts files which have the extension.ecc. In this instance, encrypted files aren't coupled with data files. The TeslaDecoder may also be used to recover the original encryption key. It's possible if the decryption key was zeroed out and a partial key was discovered in key.dat. You can also find the Tesla request that was sent directly to the server, along with the keys for decryption.



There is a second version that has encrypted file extensions of .ecc and .ezz. If the decryption key is not zeroed out, it is impossible to find the original key. The encrypted files are not linked to the data file. The encryption key is derived from the Tesla request sent to the server.



For the versions with an extension file names .ezz and .exx The original encryption key can't be obtained without the authors' private key in the event that the decryption key was zeroed out. The encrypted files with the extension.exx can be joined with data files. Decryption key can also be got from the Tesla request to the server.



Versions that use encrypted files with extensions.ccc or.abc do not utilize data files. The key to decrypt cannot be stored on your computer. It is only decrypted if the victim records the key while it is being sent to the server. The key to decrypt can be retrieved from Tesla request to the server. Top Minecraft Servers It is not possible to do this with versions prior to TeslaCrypt v2.1.0.



The release of TeslaCrypt 4.0



Recently, the developers released TeslaCrypt 4.0 sometime in March 2016. The new version fixes an issue that corrupted files larger than 4GB. It also has new ransom notes, and does not utilize an extension to protect encrypted files. The absence of an extension makes it hard for users to discover the details of TeslaCryot and what has happened to their files. With the new version, users will have to follow the path outlined in the ransom notes. It is impossible to decrypt files with no extension without a key bought or Tesla's personal key. If the attacker is able to capture the key while it was being transmitted to an online server the files could be decrypted.


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