Ransomware Research

GhostCrypt Ransomware

GhostCrypt is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2016, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
GhostCrypt
First Seen
February 1, 2016

How GhostCrypt ransomware works

File encryption patterns

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

Extensions added after encryption
.Z81928819

Ransom note and payment demands

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

fileREAD_THIS_FILE.txt
notes/READ_THIS_FILE.txt
Location: Desktop
message
notes/note.txt
Location: Login

About this analysis

This GhostCrypt 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 GhostCrypt.

Last updated: December 30, 2025

Detection coverage

Elastio detects GhostCrypt inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify GhostCrypt 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.

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What is GhostCrypt Ransomware? | Elastio