What is a .MTZU file?
A file with the .mtzu extension is a type of file that has been altered and locked by a specific kind of harmful software known as MTZU ransomware. Originally, this file could have been an image, a video, a document, or any other common file type. However, once affected by MTZU ransomware, the file's original extension, such as .jpg, .doc, or .mp4, is modified to include .mtzu at the end, resulting in new extensions like .jpg.mtzu, .doc.mtzu, or .mp4.mtzu.
The .mtzu files are essentially inaccessible without specific decryption keys or tools because they have been encrypted by the ransomware. This means the content of these files is scrambled and cannot be opened or used in a normal way. The ransomware typically leaves a ransom note, named _readme.txt, in the same folder as the encrypted files. This note usually contains instructions claiming to offer a way to recover the files, typically involving payment.
MTZU ransomware, which surfaced prominently in January 2023, is a variant of the STOP DJVU family of ransomware. It often infiltrates computers through deceptive means, such as being bundled with seemingly legitimate software that is actually laden with adware or malware. Once executed, it spreads across the system, encrypting files and appending the .mtzu extension.
To address files affected by MTZU ransomware, one of the recommended approaches is to use system restore or similar recovery tools that can revert the system to a previous state before the ransomware infection occurred. However, this method might not recover all files, and it's generally advised to seek professional help in dealing with ransomware infections. Additionally, it's crucial to maintain regular backups of important data and to exercise caution when downloading and installing new software, especially from unverified sources.
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