Detections
Analytics
WNDF-AV-000071 - Microsoft Defender AV must report Dynamic Signature dropped events.
Information
Microsoft Defender Antivirus logs 'Dynamic Signature dropped' events when it blocks or removes a file based on a dynamically updated signature, but the signature itself is dropped, meaning it was not fully processed or applied. This can indicate a potential issue with signature updates or the system's ability to handle them.Solution
Set the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Defender Antivirus >> Reporting >> Configure whether to report Dynamic Signature dropped events to 'Enabled'.See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_MS_Defender_Antivirus_V2R9_STIG.zip
Item Details
Audit Name: DISA Microsoft Defender Antivirus STIG v2r9
Category: SYSTEM AND COMMUNICATIONS PROTECTION
References: 800-53|SC-18(4), CAT|II, CCI|CCI-001170, Rule-ID|SV-278675r1192827_rule, STIG-ID|WNDF-AV-000071, Vuln-ID|V-278675
Plugin: Windows
Control ID: 132f26c0ec1b85647747339fb8eec867bbe2e7d13cc63f4b385046eea9b7c66f