Ransomware Research

ArmaLocky Ransomware

ArmaLocky is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on September 1, 2017, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
ArmaLocky
First Seen
September 1, 2017

How ArmaLocky ransomware works

File modification behavior

How ArmaLocky alters file modification timestamps is not known.

File encryption patterns

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

Extensions added after encryption
  • .armadilo1

Ransom note and payment demands

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

file_Locky_HELP_.html
notes/_Locky_HELP_.html.txt
file_ReadMe_.txt

Technical indicators

Associated executable files

The following executable files are associated with ArmaLocky ransomware:

  • MlsoSvc.exe

About this analysis

This ArmaLocky 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 ArmaLocky.

Last updated: February 24, 2023

Detection coverage

Elastio detects ArmaLocky inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify ArmaLocky 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.