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Ransomware Research
CobraLocker Ransomware
CobraLocker is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2020, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Cobra, CobraLocker NextGen, Cobra_Locker2.0, Cobra_Locker3.0, Cobra_Locker4.0, CobraLocker CryptoToys.
Quick Facts
- Ransomware Family
- CobraLocker
- First Seen
- June 1, 2020
- Known Aliases
- CobraCobraLocker NextGenCobra_Locker2.0Cobra_Locker3.0Cobra_Locker4.0CobraLocker CryptoToys
How CobraLocker Ransomware Works
Targeted Files
01ea80d8742d48beea4bffed45eb04f0593f48db91a802a1e1797001c30c0df8 -> destroyer
File Encryption Patterns
CobraLocker modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..Cobra
..IT
..c0br4
..DaVinci
..Lock
..LGNLCKD
..hacked
..aes
Ransom Note and Payment Demands
After encrypting files, CobraLocker displays ransom notes demanding payment for file recovery:
LegionReadMe.txt
Ransom message:
notes/LegionReadMe.txt
Note locations:
UserFolders
Readme.txt
Ransom message:
notes/Readme.txt
Note locations:
Desktop
index.html
Ransom message:
notes/index.html
Note locations:
Desktop
Ransom message:
notes/note.txt
Note locations:
OnceOnCompletion
Technical Indicators
Associated Executable Files
The following executable files are associated with CobraLocker ransomware:
Ransomware.exe
IT.exe
it.exe
DaVinci.exe
CoronaDecrypt0r.exe
CoronaCrypt0r.exe
BlackMamba2.exe
BlackMamba2.0.exe
ransomware.exe
ransomware.bin
AmongUs.exe
AmongUs.bin
Niros.exe
LegionLocker3.0.exe
WannaMad.exe
LegionLocker3.0
Elastio Can Help You
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About This Analysis
This CobraLocker 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 CobraLocker.
Last updated: July 30, 2025