Ransomware Research

Petya NSA EE Ransomware

Petya NSA EE is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on May 1, 2017, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Petya : NSA Exploit Edition (NSA EE), Petna, NotPetya, NonPetya, Nyetya, Petya.A, ExPetya.

Quick facts

Ransomware Family
Petya NSA EE
First Seen
May 1, 2017
Known Aliases
Petya : NSA Exploit Edition (NSA EE)PetnaNotPetyaNonPetyaNyetyaPetya.AExPetya

Ransom note and payment demands

After encrypting files, Petya NSA EE displays ransom notes demanding payment for file recovery:

message
notes/note.txt
Location: Boot

Technical indicators

Associated executable files

The following executable files are associated with Petya NSA EE ransomware:

About this analysis

This Petya NSA EE ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery, helping organizations defend against and recover from ransomware attacks like Petya NSA EE.

Last updated: December 30, 2025

Detection coverage

Elastio detects Petya NSA EE inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Petya NSA EE across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a scan against your recovery points to confirm.

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