Detections
Analytics
WNDF-AV-000074 - Microsoft Defender AV must convert warn verdict to block.
Information
If a site URL has an unknown or uncertain reputation, a toast notification presents the user with the following options:- Ok: The toast notification is released (removed), and the attempt to access the site is ended.
- Unblock: The user has access to the site for 24 hours, at which point the block is reenabled. The user can continue to use Unblock to access the site until such time that the administrator prohibits (blocks) the site, thus removing the option to Unblock.
- Feedback: The toast notification presents the user with a link to submit a ticket, which the user can use to submit feedback to the administrator in an attempt to justify access to the site.
Solution
Set the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Defender Antivirus >> Network Inspection System >> Convert warn verdict to block 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-278677r1192829_rule, STIG-ID|WNDF-AV-000074, Vuln-ID|V-278677
Plugin: Windows
Control ID: e2dbb4de81750b1f0b90b194098a6ccd6761a9ecf3482c8d57af20fb70a661b4