.U2K File Extension
U2K Ransomware Encrypted File
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What is a U2K file?
A file with the .u2k extension has been maliciously encrypted by U2K ransomware. It contains a document, image, or other file the ransomware is holding hostage. Because the file is encrypted, you cannot open it.
More Information
U2K ransomware is a form of malware that encrypts and renames a user's files. For example, after infection, a file named example.jpg becomes example.jpg.u2k. The ransomware then produces a ransom message named ReadMe.txt, which contains instructions users can supposedly follow to purchase a U2K decryptor using Tor Browser.
How did my computer become infected by U2K ransomware?
Ransomware is most commonly distributed in email attachments and programs that appear to be legitimate but are actually adware and malware bundles. If you recently downloaded and opened an unverified attachment or program, that may be how your computer became infected by U2K ransomware.
Specifically, U2K ransomware appears to be linked to the file Windows_Loader_v2.2.2.exe, a program used to illegally activate Windows. The ransomware appears to affect primarily Windows 7 users.
How to open a U2K file
At this time, there is no way to decrypt and open U2K files. The best way to restore encrypted files is to retrieve them from a recent backup or perform a System Restore.
Warning
FileInfo.com recommends you never pay a ransom to decrypt files encrypted by ransomware. Paying a ransom encourages ransomware distributors to continue their efforts, and there is no guarantee that paying a ransom will give you access to your files. Instead, you should restore your data from a recent backup created before the ransomware infected your computer.