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Ransomware Research
LightningCrypt Ransomware
LightningCrypt is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on May 1, 2017, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- LightningCrypt
- First Seen
- May 1, 2017
How LightningCrypt Ransomware Works
Targeted Files
Requires C&C (can be launched with FakeNetNG) LightningCrypt_UniqeID.txt on the Desktop
File Encryption Patterns
LightningCrypt modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..LIGHTNING
Ransom Note and Payment Demands
After encrypting files, LightningCrypt displays ransom notes demanding payment for file recovery:
LightningCrypt_Recover_Instructions.txt
Ransom message:
notes/LightningCrypt_Recover_Instructions.txt
Note locations:
Desktop
Ransom message:
notes/LightningCrypt_Recover_Instructions.png
Note locations:
Desktop
Ransom message:
notes/note.txt
Note locations:
OnceOnCompletion
Technical Indicators
Associated Executable Files
The following executable files are associated with LightningCrypt ransomware:
ChkDsk.exe
chkdsk.exe
Chkdsk.exe
Elastio Can Help You
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About This Analysis
This LightningCrypt 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 LightningCrypt.
Last updated: July 30, 2025