The file “!!! READ THIS - IMPORTANT !!!.txt” contains the following ransom note seen in the screenshot below. Additionally, the ransomware creates a key file with name similar to: #9C43A95AC27D3A131D3E8A95F2163088-Bravo _ni_0day in C:ProgramData folder. In each folder with at least one encrypted file, the file "!!! READ THIS - IMPORTANT !!!.txt" can be found. The ransomware adds one of the following extensions to encrypted files: AES_NI uses AES-256 combined with RSA-2048. That means it will encrypt the data in block sizes of 16. For 256 bit key encryption/decryption special policy files should be copied into the jrelibsecurity directory, which can be downloaded from Oracle’s web site. There are known multiple variants with different file extensions. The javax.crypto package of the Java language has the implementation of the AES algorithm. All the Avast Decryption Tools are available in one zip here. To see how AES encryption works in practical, you can check this - AES Encryption Tool. ![]() Developer: INDEX INC - Package Name: com. AES encryption operates in 2 different modes i.e. Download Encryption & Decryption Tool APK (Offline) 2 MB ( Free) - Cryptography Tool APK - Encryption & Decryption Tool (Offline) App - Latest Version. ![]() Avast Decryption Tool for AES_NI can help decrypt the AES_NI ransomware strain. The AES engine requires a plain-text and a secret key for encryption and same secret key is required again to decrypt it.
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