Ransomware Research
KillRabbit Ransomware
KillRabbit is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on August 1, 2018, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- KillRabbit
- First Seen
- August 1, 2018
How KillRabbit Ransomware Works
Targeted Files
https://app.any.run/tasks/03687e9c-994b-45fa-9c39-5f7a0347fd80/ Note is not displayed (some php files in the %TEMP% directory)
File Encryption Patterns
KillRabbit modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..killrabbitRansom Note and Payment Demands
After encrypting files, KillRabbit displays ransom notes demanding payment for file recovery:
/^ID_\w+\[\d{2}_\d{2}_\d{4}_\d{2}_\d{2}\]_\[\d{4}-authorization\]\.php$/Ransom message:
notes/ID_4H1B323U7JmR4Stm0KpL6fI3qHd7S9_[06_08_2018_17_56]_[7601-authorization].php.html
Note locations:
TempTechnical Indicators
Associated Executable Files
The following executable files are associated with KillRabbit ransomware:
KillRabbit.exebeea.exe
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About This Analysis
This KillRabbit 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 KillRabbit.
Last updated: July 30, 2025