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Ransomware Research
TeslaCrypt 4 Ransomware
TeslaCrypt 4 is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2016, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- TeslaCrypt 4
- First Seen
- April 1, 2016
How TeslaCrypt 4 Ransomware Works
Targeted Files
https://www.bleepingcomputer.com/news/security/teslacrypt-4-0-released-with-bug-fixes-and-stops-adding-extensions/ https://www.bleepingcomputer.com/news/security/teslacrypt-shuts-down-and-releases-master-decryption-key/
Ransom Note and Payment Demands
After encrypting files, TeslaCrypt 4 displays ransom notes demanding payment for file recovery:
/^-!RecOveR!-[a-z0-9]{5}\+\+\.Htm$/
Ransom message:
notes/-!RecOveR!-awcrj++.Htm
Note locations:
EveryFolder
/^-!RecOveR!-[a-z0-9]{5}\+\+\.Png$/
Ransom message:
notes/-!RecOveR!-awcrj++.Png
Note locations:
EveryFolder
/^-!RecOveR!-[a-z0-9]{5}\+\+\.Txt$/
Ransom message:
notes/-!RecOveR!-awcrj++.Txt
Note locations:
EveryFolder
/^RECOVER[a-z]{5}\.html$/
Ransom message:
notes/RECOVERilqcn.html
Note locations:
EveryFolder
/^RECOVER[a-z]{5}\.png$/
Ransom message:
notes/RECOVERilqcn.png
Note locations:
EveryFolder
/^RECOVER[a-z]{5}\.txt$/
Ransom message:
notes/RECOVERilqcn.txt
Note locations:
EveryFolder
Elastio Can Help You
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About This Analysis
This TeslaCrypt 4 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 TeslaCrypt 4.
Last updated: July 30, 2025