Oops file
File type: Miscellaneous file
Files with oops extension are not used for any application yet.
Found 2 different file type records with the same oops filename suffix.
File type category:
Miscellaneous file
Date updated: August 2, 2017
The oops file extension is not associated with any application yet.
In computer science the word oops is a deviation from correct behaviour of the Linux kernel which produces a certain error log.
The word oops is also often used as interjection on realizing that the person has made a mistake or slipped.
File type category:
Ransomware encrypted file
Date updated: October 14, 2026
Marlboro is ransomware that encrypts files and renames them with the .oops extension. It was distributed mainly through fake Microsoft Word documents sent as email attachments.
The encrypted file contains the victim's original data, but that data cannot be used normally until the file is decrypted. A decryptor for Marlboro ransomware was released in less than 24 hours.
Emsisoft Decrypter for Marlboro is a Microsoft Windows utility designed to recover files affected by this ransomware.
A file with the .oops extension cannot normally be opened because its contents are encrypted. You can download the decryptor for this particular ransomware from the Emsisoft website and use it on Microsoft Windows.
After successful decryption, open the recovered file with the program that supports its original format.
There is no meaningful way to convert a .oops file while it remains encrypted. First use Emsisoft Decrypter for Marlboro on Microsoft Windows to decrypt the file.
Once the original file has been recovered, it can be converted with software that supports that original file type.
Software apps that recover oops files:
Microsoft Windows
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