fileREADME.txt
notes/README.txt
Location: EveryFolder
Ransomware Research
ReturnBack Ransomware
ReturnBack is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on July 1, 2024, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: ReturnBackCrypt.
Quick facts
- Ransomware Family
- ReturnBack
- First Seen
- July 1, 2024
- Known Aliases
- ReturnBackCrypt
How ReturnBack ransomware works
File modification behavior
ReturnBack updates file modification timestamps after encryption.
File encryption patterns
ReturnBack modifies encrypted files using specific patterns to mark them as encrypted:
Extensions added after encryption
- ./\.[A-Za-z0-9]{8,10}$/
Ransom note and payment demands
After encrypting files, ReturnBack displays ransom notes demanding payment for file recovery:
file/^\w{8,10}\.README\.txt$/
notes/xgU6NOijB.README.txt
Location: EveryFolder
Technical indicators
Associated executable files
The following executable files are associated with ReturnBack ransomware:
- Crypt.exe
About this analysis
This ReturnBack 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 ReturnBack.
Detection coverage
Elastio detects ReturnBack inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify ReturnBack across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a hunt against your recovery points to confirm.