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Unknown file extentions tripped ransomware protection while saving files with known type extentions

  1. Last updated
    Feb 13, 2025
  2. Save as PDF
Views:
81
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
core
Last Updated:
2/13/2025, 4:04:48 PM

Applies to

  • ONTAP 9
  • Anti-ransomware (ARW)
  • MacOS

Issue

  • While saving PDFs in MacOS, an ARW surge is observed with file extensions that have random letters and numbers:

 

Cluster1::> security anti-ransomware volume workload-behavior show -vserver svm1 -volume vol1
                                                              Vserver: svm1
                                          Volume: vol1
                        File Extensions Observed: pdf, txt, tmp, xlsx, html,
                                                       pptx, 3gp, pper, csv, msg,
                                                       docx, xls, dat, sav, rds
 
........


                  Newly Observed File Extensions: DbncsA, MWID9A, FqIpKb,
                                                 Jbi0n7, S5UfAq, zWf3mK,
                                                  YTEUt6, jXX0fd, MLVBuB,
                                                  K831iM, yygW2C, gsMac0,
                                                  A9tAPu, WKDml3, OBMP9A,
                                                  0WkUqh, KfME03, mpGjV2,
                                                  k4vAsB, gMSE2P, U7fTeb
        Number of Newly Observed File Extensions: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
                                                  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1

 

 

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