Ransomware Research
IFN643 Ransomware
IFN643 is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on September 1, 2016, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- IFN643
- First Seen
- September 1, 2016
How IFN643 Ransomware Works
File Encryption Patterns
IFN643 modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..ifn643Ransom Note and Payment Demands
After encrypting files, IFN643 displays ransom notes demanding payment for file recovery:
IFN643_Malware_ReadmeRansom message:
notes/IFN643_Malware_Readme
Note locations:
RootDirectoryTechnical Indicators
Associated Executable Files
The following executable files are associated with IFN643 ransomware:
spoolpdf.exespoolpdf.anti.exe
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About This Analysis
This IFN643 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 IFN643.
Last updated: July 30, 2025