Ransomware Research
KRider Ransomware
KRider is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2017, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- KRider
- First Seen
- March 1, 2017
How KRider Ransomware Works
Targeted Files
Ecnrypts filenames -> Biblio.mdb -> A5c#)3Su.adr Error in code, ransom note created in %UserProfile% folder "DesktopDECRYPT_ME.TXT"
File Encryption Patterns
KRider modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..kr3..adrRansom Note and Payment Demands
After encrypting files, KRider displays ransom notes demanding payment for file recovery:
DECRYPT_ME.TXTRansom message:
notes/DECRYPT_ME.TXT
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with KRider ransomware:
KRider.exeKRider Ransomware.exe-ransomware.exeRansomware.exeacma.exeWindowsApplication25.exeXLran1 (2).exeRansomwareRansomware.bin
Elastio Can Help You
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About This Analysis
This KRider 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 KRider.
Last updated: July 30, 2025