Ransomware Research

BlackMist Ransomware

BlackMist 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
BlackMist
First Seen
September 1, 2017

How BlackMist ransomware works

File encryption patterns

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

Extensions added after encryption
.blackmist

Ransom note and payment demands

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

message
notes/note.txt
Location: OnceOnCompletion

Technical indicators

Associated executable files

The following executable files are associated with BlackMist ransomware:

About this analysis

This BlackMist 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 BlackMist.

Last updated: December 30, 2025

Detection coverage

Elastio detects BlackMist inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify BlackMist 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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