Ransomware Research

Nomikon Ransomware

Nomikon is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2020, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
Nomikon
First Seen
February 1, 2020

How Nomikon ransomware works

File encryption patterns

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

Extensions added after encryption
./\.[a-z]{5}$/

Ransom note and payment demands

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

fileDECRYPT.html

About this analysis

This Nomikon 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 Nomikon.

Last updated: December 30, 2025

Detection coverage

Elastio detects Nomikon inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Nomikon 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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