Ransomware Research

Satan Ransomware

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

Quick facts

Ransomware Family
Satan
First Seen
January 1, 2017

How Satan ransomware works

File encryption patterns

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

Extensions added after encryption
.stn

Ransom note and payment demands

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

fileHELP_DECRYPT_FILES.html
notes/HELP_DECRYPT_FILES.html.txt
file0_HELP_DECRYPT_FILES.html

Technical indicators

Associated executable files

The following executable files are associated with Satan ransomware:

About this analysis

This Satan 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 Satan.

Last updated: December 30, 2025

Detection coverage

Elastio detects Satan inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Satan 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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