Ransomware Research

AES-NI: April Edition Ransomware

AES-NI: April Edition is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2017, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: AES-NI : April Edition, SPECIAL VERSION: NSA EXPLOIT EDITION.

Quick facts

Ransomware Family
AES-NI: April Edition
First Seen
April 1, 2017
Known Aliases
AES-NI : April EditionSPECIAL VERSION: NSA EXPLOIT EDITION

How AES-NI: April Edition ransomware works

File encryption patterns

AES-NI: April Edition modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
.aes_ni.aes_ni_0day

Ransom note and payment demands

After encrypting files, AES-NI: April Edition displays ransom notes demanding payment for file recovery:

file!!! READ THIS - IMPORTANT !!!.txt
notes/!!! READ THIS - IMPORTANT !!!.txt
Location: EveryFolder

Technical indicators

Associated executable files

The following executable files are associated with AES-NI: April Edition ransomware:

About this analysis

This AES-NI: April Edition 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 AES-NI: April Edition.

Last updated: December 30, 2025

Detection coverage

Elastio detects AES-NI: April Edition inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify AES-NI: April Edition 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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