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CONTP-355938:报告检测到的可能勒索软件活动、检测到的文件少于20个

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问题描述

  • EMS报告arw.activity.seen
    [callhome.arw.activity.seen:alert]: Call home message for POSSIBLE RANSOMWARE ACTIVITY DETECTED, Volume: vol1 (UUID: xxxx) in Vserver: svm1 (UUID: xxxx)

  • System Manager仅报告检测到6个文件(少于默认值20个)。
  • 默认值20正在使用中:
    cluster::> security anti-ransomware volume attack-detection-parameters show -vserver svm1 -volume vol1
    Vserver Name : svm1
    Volume Name : vol1
    Is Detection Based on High Entropy Data Rate? : true
    Is Detection Based on Never Seen before File Extension? : false
    Is Detection Based on File Create Rate? : true
    Is Detection Based on File Rename Rate? : true
    Is Detection Based on File Delete Rate? : true
    Is Detection Relaxing Popular File Extensions? : true
    High Entropy Data Surge Notify Percentage : 100
    File Create Rate Surge Notify Percentage : 100
    File Rename Rate Surge Notify Percentage : 100
    File Delete Rate Surge Notify Percentage : 100
    Never Seen before File Extensions Count Notify Threshold : 20
    Never Seen before File Extensions Duration in Hour : 24

 

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