RedRum Ransomware
RedRum is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2019, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: RedRum, Grinch, Thanos, Tycoon.
Quick facts
How RedRum ransomware works
File encryption patterns
RedRum modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, RedRum displays ransom notes demanding payment for file recovery:
notes/decryption.txt
Technical indicators
Associated executable files
The following executable files are associated with RedRum ransomware:
- program.exe
- Local Security Authority Process1.exe
- Local Security Authority Process1.zip
About this analysis
This RedRum 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 RedRum.
Last updated: December 30, 2025
Elastio detects RedRum inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify RedRum 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.
Recent ransomware
Explore other threats in our database