BACKJOHN is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2023, this ransomware has been actively targeting systems worldwide.
Quick Facts
Ransomware Family
BACKJOHN
First Seen
March 1, 2023
How BACKJOHN Ransomware Works
Targeted Files
Full extension -> .id[C63F241F-3143].[backjohn131@gmail.com].BACKJOHN
File Encryption Patterns
BACKJOHN modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..BACKJOHN
Ransom Note and Payment Demands
After encrypting files, BACKJOHN displays ransom notes demanding payment for file recovery:
fileinfo.txt
Ransom message:
notes/info.txt
Note locations:
RootDiscsDesktop
fileinfo.hta
Ransom message:
notes/info.hta
Note locations:
RootDiscsDesktop
Technical Indicators
Associated Executable Files
The following executable files are associated with BACKJOHN ransomware:
software.exe
JC7yn1Dzu8.exe
Elastio Can Help You
Don't let BACKJOHN ransomware take over your data
Elastio provides advanced ransomware protection and recovery solutions to keep your organization safe.
This BACKJOHN 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 BACKJOHN.