file/^[A-Z0-9]{8}-FILES ENCRYPTED\.txt$/
notes/5GXMG9G4-FILES ENCRYPTED.txt
Location: EveryFolder
Ransomware Research
05250lock Ransomware
05250lock is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2020, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: NuBe.
Quick facts
- Ransomware Family
- 05250lock
- First Seen
- January 1, 2020
- Known Aliases
- NuBe
How 05250lock ransomware works
File modification behavior
05250lock updates file modification timestamps after encryption.
File encryption patterns
05250lock modifies encrypted files using specific patterns to mark them as encrypted:
Extensions added after encryption
- ./\.[a-z]{4,5}$/
Ransom note and payment demands
After encrypting files, 05250lock displays ransom notes demanding payment for file recovery:
file/^CLICK_HERE-[a-z]{4,5}\.txt$/
notes/CLICK_HERE-dbcf.txt
Location: EveryFolder
About this analysis
This 05250lock 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 05250lock.
Detection coverage
Elastio detects 05250lock inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify 05250lock 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.