Ransomware Research

Enc1 Ransomware

Enc1 is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2019, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
Enc1
First Seen
January 1, 2019

How Enc1 ransomware works

File encryption patterns

Enc1 modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
._enc1

Ransom note and payment demands

After encrypting files, Enc1 displays ransom notes demanding payment for file recovery:

file/^decrypt_\w{10}\.txt$/
notes/decrypt_5sc7J7UK80.txt
Location: EveryFolder

About this analysis

This Enc1 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 Enc1.

Last updated: December 30, 2025

Detection coverage

Elastio detects Enc1 inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Enc1 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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