McAfee VirusScan On-Demand scan must be configured to decode MIME encoded files.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-6612	DTAM053	SV-56404r1_rule		Medium

Description
Multipurpose Internet Mail Extensions (MIME) encoded files can be crafted to hide a malicious payload. When the MIME encoded file is presented to software that decodes the MIME encoded files, such as an email client, the malware is released. Scanning these files as part of the regularly scheduled scans tasks will mitigate this risk.

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

Details

Check Text ( C-49318r1_chk )
Access the local VirusScan console by clicking Start->All Programs->McAfee->VirusScan Console. In the console window, under Task, with the assistance of the System Administrator, identify the weekly on-demand client scan task. Right-click the Task and select Properties. Under the Scan Items tab, locate the "Options:" label. Ensure the "Decode MIME encoded files" option is selected. Criteria: If "Decode MIME encoded files" is selected, this is not 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) DesktopProtection\Tasks Under the DesktopProtection\Tasks, and with the assistance of the System Administrator, review each GUID key's szTaskName to find the GUID key associated with weekly on-demand client scan task. Criteria: If, under the applicable GUID key, the ScanMime has value of 0, this is a finding.

Check Text ( C-49318r1_chk )

Access the local VirusScan console by clicking Start->All Programs->McAfee->VirusScan Console.
In the console window, under Task, with the assistance of the System Administrator, identify the weekly on-demand client scan task.
Right-click the Task and select Properties.

Under the Scan Items tab, locate the "Options:" label. Ensure the "Decode MIME encoded files" option is selected.

Criteria: If "Decode MIME encoded files" is selected, this is not 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)
DesktopProtection\Tasks

Under the DesktopProtection\Tasks, and with the assistance of the System Administrator, review each GUID key's szTaskName to find the GUID key associated with weekly on-demand client scan task.

Criteria: If, under the applicable GUID key, the ScanMime has value of 0, this is a finding.

Fix Text (F-49122r1_fix)
Access the local VirusScan console by clicking Start->All Programs->McAfee->VirusScan Console. In the console window, under Task, with the assistance of the System Administrator, identify the weekly on-demand client scan task. Right-click the Task and select Properties. Under the Scan Items tab, locate the "Options:" label. Select the "Decode MIME encoded files" option. Click OK to Save.