GX40 Ransomware
GX40 is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2017, this ransomware has been actively targeting systems worldwide.
Quick facts
How GX40 ransomware works
File encryption patterns
GX40 modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, GX40 displays ransom notes demanding payment for file recovery:
notes/note.txt
Technical indicators
Associated executable files
The following executable files are associated with GX40 ransomware:
- GX40.exe
- GX40 - PayPal Validator.exe
- GX40_RANSOMWARE_BUILDER.exe
- RANSOMWARE.exe
- GX40 RANSOMWARE BUILDER.exe
- GX40 - Ransomeware Builder.exe
- GX40_RANSOMWARE_BUILDER (1).exe
- b73.exe
- System.exe
- Google Chrome.exe
About this analysis
This GX40 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 GX40.
Last updated: December 30, 2025
Elastio detects GX40 inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify GX40 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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