Ransomware Research

Magniber Ransomware

Magniber is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on October 1, 2017, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: My Decryptor.

Quick facts

Ransomware Family
Magniber
First Seen
October 1, 2017
Known Aliases
My Decryptor

How Magniber ransomware works

File encryption patterns

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

Extensions added after encryption
./\.[a-z]{5,9}$/.kgpvwnr.hfsgvl.ypail.sbulzxt.ygshc.hxzrvhh.bciheah.dadvtuq.fprgbk.madrcby.ymdmf.zzzycdtls

Ransom note and payment demands

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

filereadme.txt
notes/readme.txt
Location: EveryFolder
fileREADME.html
notes/README.html
Location: EveryFolder
fileREAD_ME_FOR_DECRYPT.txt
notes/READ_ME_FOR_DECRYPT.txt
Location: EveryFolder
file/^_HOW_TO_DECRYPT_MY_FILES_[a-z0-9]{10,20}_\.txt$/
notes/_HOW_TO_DECRYPT_MY_FILES_27dh6y1kyr49yjhx8i3_.txt
Location: EveryFolder
file/^READ_ME_FOR_DECRYPT_[a-z0-9]{10,20}_\.txt$/
notes/READ_ME_FOR_DECRYPT_lz44rh37k62ui993869_.txt
Location: EveryFolder

Technical indicators

Associated executable files

The following executable files are associated with Magniber ransomware:

About this analysis

This Magniber 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 Magniber.

Last updated: December 30, 2025

Detection coverage

Elastio detects Magniber inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Magniber 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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