Ransomware Research
CryptoBit Ransomware
CryptoBit 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
- CryptoBit
- First Seen
- April 1, 2016
How CryptoBit Ransomware Works
Targeted Files
Encrypts first 0x10000 bytes
Ransom Note and Payment Demands
After encrypting files, CryptoBit displays ransom notes demanding payment for file recovery:
OKSOWHATHAPPENDTOYOURFILES.TXTRansom message:
notes/OKSOWHATHAPPENDTOYOURFILES.TXT
Note locations:
EveryFolderhelloreadmenow23.TXTRansom message:
notes/helloreadmenow23.TXT
helloreadmenow24.TXTRansom message:
notes/helloreadmenow23.TXT
Technical Indicators
Associated Executable Files
The following executable files are associated with CryptoBit ransomware:
D87E.tmp.ex_
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About This Analysis
This CryptoBit 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 CryptoBit.
Last updated: July 30, 2025