Ransomware Research

QQ Ransomware

QQ is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2025, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
QQ
First Seen
February 1, 2025

How QQ ransomware works

File encryption patterns

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

Extensions added after encryption
.QQ

Ransom note and payment demands

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

fileHow To Restore Your Files.txt
notes/How To Restore Your Files.txt
Location: EveryFolder
message
notes/note.txt
Location: OnceOnCompletion

Technical indicators

Associated executable files

The following executable files are associated with QQ ransomware:

About this analysis

This QQ 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 QQ.

Last updated: December 30, 2025

Detection coverage

Elastio detects QQ inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify QQ 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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