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V-228402

CAT II (Medium)

Exchange software must be monitored for unauthorized changes.

Rule ID

SV-228402r928977_rule

STIG

Microsoft Exchange 2016 Mailbox Server Security Technical Implementation Guide

Version

V2R6

CCIs

CCI-001814

Discussion

Monitoring software files for changes against a baseline on a regular basis may help detect the possible introduction of malicious code on a system.

Check Content

Review the Email Domain Security Plan (EDSP).

Determine whether the site monitors system files (e.g., *.exe, *.bat, *.com, *.cmd, and *.dll) on servers for unauthorized changes against a baseline on a weekly basis. 

If software files are not monitored for unauthorized changes, this is a finding.

Fix Text

Update the EDSP to specify that the organization monitors system files on servers for unauthorized changes against a baseline on a weekly basis or verify that this information is documented by the organization.

Monitor the software files (e.g., *.exe, *.bat, *.com, *.cmd, and *.dll) on Exchange servers for unauthorized changes against a baseline on a weekly basis. 

Note: This can be done with the use of various monitoring tools.