Ransomware Research
Cry36 Ransomware
Cry36 is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on May 1, 2018, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: X3M.
Quick Facts
- Ransomware Family
- Cry36
- First Seen
- May 1, 2018
- Known Aliases
- X3M
How Cry36 Ransomware Works
Targeted Files
Sample filenames -> SECRET.TXT.id_1234567890_[liukang@mortalkombat.su].08c85;SECRET.TXT.id_1234567890_[don-corleone@mortalkombat.su].vs95l
File Encryption Patterns
Cry36 modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
./\.id_[0-9]{10}_\[[\w.-]+@\w+\.\w+\]\.[a-z0-9]{5}$/..nem3end..nemesisRansom Note and Payment Demands
After encrypting files, Cry36 displays ransom notes demanding payment for file recovery:
#DECRYPT_MY_FILES#.txtRansom message:
notes/#DECRYPT_MY_FILES#.txt
Note locations:
EveryFolder### DECRYPT MY FILES ###.txtRansom message:
notes/### DECRYPT MY FILES ###.txt
Elastio Can Help You
Don't let Cry36 ransomware take over your data
Elastio provides advanced ransomware protection and recovery solutions to keep your organization safe.
About This Analysis
This Cry36 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 Cry36.
Last updated: July 30, 2025