.trosak Extension is a new variant of ransomware that encrypts most of the files on the attacked PC. Security researchers had reported that the threat uses AES-256 and RSA-2048 encryption algorithm to encode files on the attacked PC and appends . .trosak Extension to the encrypted files. It is analyzed that the .trosak Extension mostly targets English and Russian-speaking users. And is distributed through phishing email campaigns. Unfortunately, if the user downloads the infected mail attachment that is actually a macro-enabled document containing the payloads of the virus. Upon clicking, the document starts running the script and .trosak Extension gets installed on the attacked computer system.
After installed, it searches for the important documents, photos, video, audio, databases, PDFs and other local drives. The infection uses AES cipher to transcode the data that are locked by the filename and the‘.trosak Extension’ suffix. For example, blackcat.jpg is renamed to blackcat.jpg..trosak Extension. After the encryption process been done, then the Ransomware drops a file named as ‘README_FOR_DECRYPT_YOUR_FILES.txt’ on the desktop and the encryption locations.
According to the ransom note, the authors demands 0.3 Bitcoin (1815 USD/1461 EUR) as ransom. .trosak Extension describes it as the ‘.trosak Extension Decryptor’ software which means after paying the amount the user will be provided with the decryption key to decode the locked files.
However, there is no any guarantee that they will decrypt all the files after receiving the payment. Thus, security researchers advise not to pay the ransom to the authors of .trosak Extension and quickly remove the threat from the PC. Also, you can try recovering your data from backups if any or take the help of data recovery software programs.
We would recommend to use below tool and run it on your computer to remove .trosak Extension automatically.