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What’s decrypt_STOPDjvu.exe (Emsisoft Decryptor for STOPDjvu)? Is it safe or a virus?

The "decrypt_STOPDjvu.exe" tool by Emsisoft Ltd, described as "Emsisoft Decryptor for STOPDjvu," is a specialized utility designed to help victims of the STOP/Djvu ransomware recover their encrypted files.

Ransomware from the STOP/Djvu family encrypts users' files, making them inaccessible, and demands a ransom for decryption. This tool allows decryption of files only if they were encrypted using an offline key, as online keys unique to each victim remain inaccessible without the attackers' cooperation.

It works by comparing keys and providing a way to restore encrypted files without paying the ransom, though its effectiveness depends on the specific encryption circumstances.

Researched by Laura @ SpyShelter Labs

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More about decrypt_STOPDjvu.exe on WINDOWS

Who makes decrypt_STOPDjvu.exe (Emsisoft Decryptor for STOPDjvu)?

We’ve found Emsisoft Ltd should be the publisher of decrypt_STOPDjvu.exe.

How do we know? Our SpyShelter cybersecurity labs focuses on monitoring different types of Windows PC executables and their behaviors for our popular SpyShelter Antispyware software. Learn more about us, and how our cybersecurity team studies Windows PC executables/processes.

What does it mean if someone is the publisher of a PC .exe (executable or process)?

The publisher of an executable is the entity responsible for its distribution and authenticity. Most processes/executables on your PC should be signed. The signature on the executable should have been verified through a third party whose job it is to make sure the entity is who it says it is. Find an unsigned executable? You should consider scanning any completely unsigned .exe on your PC.

Last updated: May 6, 2025

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Our team at SpyShelter has been studying Windows PC executables for over 15 years, to help fight against spyware, malware, and other threats. SpyShelter has been featured in publications like The Register, PC Magazine, and many others. Now we’re working to share free, actionable, and easy to understand information about Windows executables (processes) with the world, to help as many people as possible keep their devices safe. Learn more about us on our "About SpyShelter” page.

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