Ransomware Research

DoppelPaymer Ransomware

DoppelPaymer is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2019, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: DoppelPaymer Doxware, Doppeled.

Quick facts

Ransomware Family
DoppelPaymer
First Seen
June 1, 2019
Known Aliases
DoppelPaymer DoxwareDoppeled

How DoppelPaymer ransomware works

File encryption patterns

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

Extensions added after encryption
.locked.doppeled

Ransom note and payment demands

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

file{origin_filename}.readme2unlock.txt
notes/DOC1.docx.readme2unlock.txt
Location: EveryFile
file{origin_filename}.how2decrypt.txt
Location: EveryFile

Technical indicators

Associated executable files

The following executable files are associated with DoppelPaymer ransomware:

About this analysis

This DoppelPaymer 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 DoppelPaymer.

Last updated: December 30, 2025

Detection coverage

Elastio detects DoppelPaymer inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify DoppelPaymer 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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