The file “!!! READ THIS - IMPORTANT !!!.txt” contains the following ransom note seen in the screenshot below. Download Avast Decryption Tool for BadBlock Ransomware 1.0.0. 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. This ransomware strain encrypts user files with the Chacha20 cipher, but now with Avast's Decryption Tool for TargetCompany, victims can decrypt their files for free. The ransomware adds one of the following extensions to encrypted files: Avast Decryption Tool for TargetCompany is another tool for decrypting files held hostage by the TargetCompany ransomware strain. In October 2018, GandCrab developers released 997 keys for victims that are located in Syria. GandCrab was one of the most prevalent ransomware in 2018. All the Avast Decryption Tools are available in one zip here. AES_NI uses AES-256 combined with RSA-2048. Avast Decryption Tool for GandCrab can unlock Globe, one of the most prevalent ransomware problems of 2018. There are known multiple variants with different file extensions. The attacker requests payment in Bitcoin.Avast Decryption Tool for AES_NI can help decrypt the AES_NI ransomware strain. The MafiaWare666 ransomware displays a window with instructions detailing how to pay the ransom. Files held hostage are appended with one or all of the following. MafiaWare666 searches specific folder locations (Desktop, Music, Videos, Pictures, and Documents) and encrypts numerous file extensions like 7z, Bat, DivX, HTML, JPEG, JPG, MP3, MP4, ZIP, and everything in between for the most part. It is likely that new or unknown samples may encrypt files differently, making them decryptable without further analysis. Avast researchers found a vulnerability in the encryption schema that allows some of the variants to be decrypted without paying the ransom. MafiaWare666 encrypts files using AES encryption. The MafiaWare666 ransomware strain is written in C# there aren't any obfuscation or anti-analysis techniques.
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