fileLockedReadMe.txt
notes/LockedReadMe.txt
Location: UserFolders, Roaming
Ransomware Research
ERR Ransomware
ERR is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2025, this ransomware has been actively targeting systems worldwide.
Quick facts
- Ransomware Family
- ERR
- First Seen
- June 1, 2025
How ERR ransomware works
File modification behavior
ERR updates file modification timestamps after encryption.
File encryption patterns
ERR modifies encrypted files using specific patterns to mark them as encrypted:
Extensions added after encryption
- .ciphered
Ransom note and payment demands
After encrypting files, ERR displays ransom notes demanding payment for file recovery:
Technical indicators
Associated executable files
The following executable files are associated with ERR ransomware:
- Locker.exe
- ConsoleApp2.exe
About this analysis
This ERR 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 ERR.
Detection coverage
Elastio detects ERR inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify ERR 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.