DEFEAT: Stitching Fragmented File I/O Contexts for Early Ransomware Detection
DEFEAT addresses a growing ransomware evasion tactic — fragmenting encryption I/O across temp files — that blinds detectors relying on contiguous file-operation patterns.
Summary written by editorial AI · Source link below
arXiv:2609.21426v1 Announce Type: new Abstract: Ransomware increasingly fragments its file operations across temporary and intermediate files, scattering the semantic context that links individual I/O events to an overarching encryption campaign. This fragmentation defeats existing detectors that reason over isolated file streams -- whether pattern-based methods that match rigid event sequences or learning-based methods that require accumulating statistical evidence across many files. We presen
Editorial Analysis
Fragmented file I/O evasion is increasingly observed in the wild; SOC teams relying on traditional file-access heuristics may miss active encryption campaigns.
Validate ransomware detection coverage against fragmented I/O patterns and update EDR rules to correlate scattered file operations across temp paths.
Modern ransomware fragments its encryption activity to evade current detection tools — new research offers a method to close this visibility gap.
Forward-looking interpretation drafted by editorial AI under human review — not a reproduction of the source. See methodology.
External link — opens at arXiv Crypto & Security in a new tab.
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