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Ransomware Research
EncodeBat Ransomware
EncodeBat is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2021, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Encode.bat.
Quick Facts
- Ransomware Family
- EncodeBat
- First Seen
- June 1, 2021
- Known Aliases
- Encode.bat
How EncodeBat Ransomware Works
Targeted Files
encrypts its own notes -> ALL-YOUR-FILES-ARE-ENCRYPTED.txt.encrypted Replaces content with some certificate;doesn’t crypt D drive Encrypts only user folders
File Encryption Patterns
EncodeBat modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..encrypted
Ransom Note and Payment Demands
After encrypting files, EncodeBat displays ransom notes demanding payment for file recovery:
ALL-YOUR-FILES-ARE-ENCRYPTED.txt
Ransom message:
notes/ALL-YOUR-FILES-ARE-ENCRYPTED.txt
Note locations:
UserFolders
Technical Indicators
Associated Executable Files
The following executable files are associated with EncodeBat ransomware:
Wextract
WEXTRACT.EXE .MUI
Encode.exe
Elastio Can Help You
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About This Analysis
This EncodeBat 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 EncodeBat.
Last updated: July 30, 2025