WannaCash Ransomware
WannaCash is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2019, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: WannaCash NextGen, WannaCash 2.0.
Quick facts
How WannaCash ransomware works
File encryption patterns
WannaCash modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, WannaCash displays ransom notes demanding payment for file recovery:
notes/как расшифровать файлы.txt
notes/Contribution.txt
Technical indicators
Associated executable files
The following executable files are associated with WannaCash ransomware:
- Ключи_активации_на_365.exe
- Ключи активации на 365.exe
- Ключи активации на 365 дней.exe
- Ключи активации на 365 дней-2010.exe
- dobro
- hostsss.exe
- eset keys [до 06.06.2020].exe
- egui.exe
- EGUIS.EXE
- Ключи для ESET[all versions] на 365 дней.exe
- ESETNOD.exe
- egui.exe, eguis_upx.exe
- Ключи активации на год_.exe
About this analysis
This WannaCash 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 WannaCash.
Last updated: December 30, 2025
Elastio detects WannaCash inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify WannaCash across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a scan against your recovery points to confirm.
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