Ransomware Research

Solider Ransomware

Solider is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on May 1, 2020, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
Solider
First Seen
May 1, 2020

How Solider ransomware works

File encryption patterns

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

Extensions added after encryption
.xsmb

Ransom note and payment demands

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

filecontact.txt
notes/contact.txt

About this analysis

This Solider 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 Solider.

Last updated: December 30, 2025

Detection coverage

Elastio detects Solider inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Solider 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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