Ransomware Research

Anti-DDos Ransomware

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

Quick facts

Ransomware Family
Anti-DDos
First Seen
May 1, 2017

How Anti-DDos ransomware works

File encryption patterns

Anti-DDos modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
.fucked

Ransom note and payment demands

After encrypting files, Anti-DDos displays ransom notes demanding payment for file recovery:

message
notes/note.txt

About this analysis

This Anti-DDos 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 Anti-DDos.

Last updated: December 30, 2025

Detection coverage

Elastio detects Anti-DDos inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Anti-DDos 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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What is Anti-DDos Ransomware? | Elastio