Ransomware Research

Nuke Ransomware

Nuke is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on October 1, 2016, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
Nuke
First Seen
October 1, 2016

How Nuke ransomware works

File encryption patterns

Nuke modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
.0x5bm.nuclear55

Ransom note and payment demands

After encrypting files, Nuke displays ransom notes demanding payment for file recovery:

file!!_RECOVERY_instructions_!!.txt
notes/!!_RECOVERY_instructions_!!.txt
Location: EveryFolder
file!!_RECOVERY_instructions_!!.html
notes/!!_RECOVERY_instructions_!!.html
Location: EveryFolder
screenshot
notes/desktop_wallpaper.bmp
Location: Desktop

Technical indicators

Associated executable files

The following executable files are associated with Nuke ransomware:

About this analysis

This Nuke 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 Nuke.

Last updated: December 30, 2025

Detection coverage

Elastio detects Nuke inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Nuke 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.

See How the Hunt Engine WorksRequest a Demo

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