McAfee VirusScan On-Access Scanner All Processes settings must be configured to not exclude any files from being scanned unless exclusions have been documented with, but also be approved by the ISSO/ISSM/AO.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-42564	DTAM153	SV-55292r3_rule		Medium

Description
When scanning for malware, excluding specific files will increase the risk of a malware-infected file going undetected. By configuring antivirus software without any exclusions, the scanner has a higher success rate at detecting and eradicating malware.

STIG	Date
McAfee VirusScan 8.8 Local Client STIG	2018-04-04

Details

Check Text ( C-49364r8_chk )
Access the local VirusScan console by clicking Start->All Programs->McAfee->VirusScan Console. On the menu bar, click Task->On-Access Scanner Properties. Select All Processes. Under the Exclusions tab, locate the "What not to scan:" label. Ensure there are no exclusions listed. If exclusions are listed, verify they have been documented and approved by the ISSO/ISSM/AO. Criteria: If there are no exclusions listed in the "What not to scan:" field, this is a not finding. If there are exclusions listed in the "What not to scan:" field, and the exclusions have been documented with, and approved by, the ISSO/ISSM/AO, this is not a finding. If there are exclusions listed in the "What not to scan:" field, and the exclusions have not been documented with, and approved by, the ISSO/ISSM/AO, this is a finding. On the client machine, use the Windows Registry Editor to navigate to the following key: HKLM\Software\McAfee\ (32-bit) HKLM\Software\Wow6432Node\McAfee\ (64-bit) SystemCore\VSCore\On Access Scanner\McShield\Configuration\Default Criteria: If the value NumExcludeItems is 0, this is not a finding. If NumExcludeItems is not 1 or greater, and exclusions have been not been documented with and approved by the ISSO/ISSM/AO, this is a finding. If NumExcludeItems is 1 or greater, and exclusions have been approved by the ISSO/ISSM/AO, this is not a finding.

Check Text ( C-49364r8_chk )

Access the local VirusScan console by clicking Start->All Programs->McAfee->VirusScan Console.
On the menu bar, click Task->On-Access Scanner Properties.
Select All Processes.

Under the Exclusions tab, locate the "What not to scan:" label. Ensure there are no exclusions listed. If exclusions are listed, verify they have been documented and approved by the ISSO/ISSM/AO.

Criteria: If there are no exclusions listed in the "What not to scan:" field, this is a not finding.
If there are exclusions listed in the "What not to scan:" field, and the exclusions have been documented with, and approved by, the ISSO/ISSM/AO, this is not a finding.
If there are exclusions listed in the "What not to scan:" field, and the exclusions have not been documented with, and approved by, the ISSO/ISSM/AO, this is a finding.

On the client machine, use the Windows Registry Editor to navigate to the following key:
HKLM\Software\McAfee\ (32-bit)
HKLM\Software\Wow6432Node\McAfee\ (64-bit)
SystemCore\VSCore\On Access Scanner\McShield\Configuration\Default

Criteria: If the value NumExcludeItems is 0, this is not a finding.
If NumExcludeItems is not 1 or greater, and exclusions have been not been documented with and approved by the ISSO/ISSM/AO, this is a finding.
If NumExcludeItems is 1 or greater, and exclusions have been approved by the ISSO/ISSM/AO, this is not a finding.

Fix Text (F-48146r2_fix)
Access the local VirusScan console by clicking Start->All Programs->McAfee->VirusScan Console. On the menu bar, click Task->On-Access Scanner Properties. Select All Processes. Under the Exclusions tab, locate the "What not to scan:" label. Remove any exclusions listed.