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Ransomware Research
KillCrypt Ransomware
KillCrypt is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2026, this ransomware has been actively targeting systems worldwide.
Quick facts
- Ransomware Family
- KillCrypt
- First Seen
- March 1, 2026
How KillCrypt ransomware works
File modification behavior
KillCrypt updates file modification timestamps after encryption.
File encryption patterns
KillCrypt modifies encrypted files using specific patterns to mark them as encrypted:
Extensions added after encryption
- .enc
Ransom note and payment demands
After encrypting files, KillCrypt displays ransom notes demanding payment for file recovery:
Technical indicators
Associated executable files
The following executable files are associated with KillCrypt ransomware:
- KillCrypt_5831.exe
- KillCrypt_4915.exe
About this analysis
This KillCrypt 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 KillCrypt.
Detection coverage
Elastio detects KillCrypt inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify KillCrypt 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.