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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
Targeted Files
a8f86ee2d866f2216d5298f5319ca8bce9caf24fdb4feb51c2148eba40ad6eb6 -> MSI file. Works only on win10/11 (due to SYSCALLS) c21887eaa1e31b9220d0807d3a7d0f30421ab6f80cfc1c556d534587dd9e6343 -> OK
File Encryption Patterns
Magniber modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
./\.[a-z]{5,9}$/
..kgpvwnr
..hfsgvl
..ypail
..sbulzxt
..ygshc
..hxzrvhh
..bciheah
..dadvtuq
..fprgbk
..madrcby
..ymdmf
Ransom Note and Payment Demands
After encrypting files, Magniber displays ransom notes demanding payment for file recovery:
readme.txt
Ransom message:
notes/readme.txt
README.html
Ransom message:
notes/README.html
Note locations:
EveryFolder
READ_ME_FOR_DECRYPT.txt
Ransom message:
notes/READ_ME_FOR_DECRYPT.txt
Note locations:
EveryFolder
/^_HOW_TO_DECRYPT_MY_FILES_[a-z0-9]{10,20}_\.txt$/
Ransom message:
notes/_HOW_TO_DECRYPT_MY_FILES_27dh6y1kyr49yjhx8i3_.txt
Note locations:
EveryFolder
/^READ_ME_FOR_DECRYPT_[a-z0-9]{10,20}_\.txt$/
Ransom message:
notes/READ_ME_FOR_DECRYPT_lz44rh37k62ui993869_.txt
Note locations:
EveryFolder
Technical Indicators
Associated Executable Files
The following executable files are associated with Magniber ransomware:
kgpvwnr.exe
Magniber.exe
SAMPELS (102)
magniber_payload_N3ii3Ne9O10VC5LU.exe
FILE_6
FILE_16
MbxrightsCorelocation
MbxrightsCorelocation.exe
Magnitude_Payload
exercise
magni_orig.dll
payl2.dll
hsmzrhfe.dll
SYSTEM.Security.Update.Package-da2e252817.msi
G_001.xxxxxxx
G_001.msi
429307.msi
G_001.msi_
G_001
Security_Upgrade_Software_Win10.0.msi
Elastio Can Help You
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About This Analysis
This Magniber ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery solutions, helping organizations defend against and recover from ransomware attacks like Magniber.
Last updated: July 30, 2025