Ransomware Research

Lilocked Ransomware

Lilocked is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on July 1, 2019, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: LILU.

Quick facts

Ransomware Family
Lilocked
First Seen
July 1, 2019
Known Aliases
  • LILU

How Lilocked ransomware works

File modification behavior

How Lilocked alters file modification timestamps is not known.

File encryption patterns

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

Extensions added after encryption
  • .lilocked

Ransom note and payment demands

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

file#README.lilocked
notes/#README.lilocked

Technical indicators

Associated executable files

The following executable files are associated with Lilocked ransomware:

  • unlocker
  • 0

About this analysis

This Lilocked 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 Lilocked.

Last updated: December 9, 2022

Detection coverage

Elastio detects Lilocked inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Lilocked across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a hunt against your recovery points to confirm.