Ransomware Research

Scarab-ImmortalLock Ransomware

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

Quick facts

Ransomware Family
Scarab-ImmortalLock
First Seen
March 1, 2019

How Scarab-ImmortalLock ransomware works

File encryption patterns

Scarab-ImmortalLock modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
.IMRTL

Ransom note and payment demands

After encrypting files, Scarab-ImmortalLock displays ransom notes demanding payment for file recovery:

fileHOW TO RECOVER ENCRYPTED FILES.TXT
notes/HOW TO RECOVER ENCRYPTED FILES.TXT
Location: EveryFolder

About this analysis

This Scarab-ImmortalLock 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 Scarab-ImmortalLock.

Last updated: December 30, 2025

Detection coverage

Elastio detects Scarab-ImmortalLock inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Scarab-ImmortalLock 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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