Ransomware Research
Delta Ransomware
Delta is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2021, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: AsupQue.
Quick Facts
- Ransomware Family
- Delta
- First Seen
- April 1, 2021
- Known Aliases
- AsupQue
How Delta Ransomware Works
Targeted Files
md5 ->7B9C52A4BADE8FEA2AEC7F70347F1A2F (found on Twitter, not accessable on VT/Any.Run/Hybrid/Tria.ge etc.) files for analysis received from bleepingcomputer
File Encryption Patterns
Delta modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
./\.\[Delta\][A-Za-z0-9]{8}/Ransom Note and Payment Demands
After encrypting files, Delta displays ransom notes demanding payment for file recovery:
info.htaRansom message:
notes/info.hta
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About This Analysis
This Delta 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 Delta.
Last updated: July 30, 2025