Windows security essentials executable modified

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Classification:

attack

Tactic:

TA0005-defense-evasion

Technique:

T1036-masquerading

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Goal

Detect modifications of the Windows security essentials executable.

Strategy

Various compliance frameworks, including PCI DSS, SOC, and CIS, require monitoring of critical system and configuration files. Microsoft recommends the monioring of the Windows security essentials executable located at ‘C:\Program Files\Microsoft Security Client\msseces.exe’ based on known attack patterns.

Triage and response

Identify which user or process modified the registry key.
If these changes were not authorized, and you cannot confirm the safety of the changes, roll back the host to an acceptable configuration.

Requires Agent version 7.54 or later