FortiSIEM Rules

Windows: Potential Tampering With Security Products Via WMIC

Rule ID


Default Status



Detects uninstallation or termination of security products using the WMIC utility. This rule is adapted from






Defense Evasion

Defense Evasion consists of techniques that adversaries use to avoid detection throughout their compromise. Techniques used for defense evasion include uninstalling/disabling security software or obfuscating/encrypting data and scripts. Adversaries also leverage and abuse trusted processes to hide and masquerade their malware. Other tactics’ techniques are cross-listed here when those techniques include the added benefit of subverting defenses.

MITRE ATT&CK® Techniques


Impair Defenses: Disable or Modify Tools

Adversaries may disable security tools to avoid possible detection of their tools and activities. This can take the form of killing security software or event logging processes, deleting Registry keys so that tools do not start at run time, or other methods to interfere with security tools scanning or reporting information.



Data Source

Windows Sysmon via FortiSIEM Agent



Remediation Guidance

No remediation guidance specified

Time Window

If the following pattern or patterns match an ingested event within the given time window in seconds, trigger an incident.

300 seconds

Trigger Conditions

If the following defined pattern/s occur within a 300 second time window.


SubPattern Definitions

SubPattern Name: Filter

This is the named definition of the event query, this is important if multiple subpatterns are defined to distinguish them.

SubPattern Query

This is the query logic that matches incoming events

eventType="Win-Sysmon-1-Create-Process" AND ((command REGEXP ".*wmic.*" AND command REGEXP ".*product where .*" AND command REGEXP ".*call.*" AND command REGEXP ".*uninstall.*" AND command REGEXP ".*/nointeractive.*") OR (command REGEXP ".*wmic.*" AND command REGEXP ".*caption like .*" AND command REGEXP ".*call delete.*|.*call terminate.*") OR (command REGEXP ".*process .*" AND command REGEXP ".*where .*" AND command REGEXP ".*delete.*")) AND command REGEXP ".*%Sophos%.*|.*%carbon%.*|.*%cylance%.*|.*%endpoint%.*|.*%eset%.*|.*%malware%.*|.*%symantec%.*|.*AVG .*|.*Antivirus.*|.*Carbon Black.*|.*CarbonBlack.*|.*Cb Defense Sensor 64-bit.*|.*Crowdstrike Sensor.*|.*Cylance .*|.*DLP Endpoint.*|.*Dell Threat Defense.*|.*ESET File Security.*|.*Endpoint Detection.*|.*Endpoint Protection.*|.*Endpoint Security.*|.*Endpoint Sensor.*|.*LogRhythm System Monitor Service.*|.*Malwarebytes.*|.*McAfee Agent.*|.*Microsoft Security Client.*|.*Sophos Anti-Virus.*|.*Sophos AutoUpdate.*|.*Sophos Credential Store.*|.*Sophos Management Console.*|.*Sophos Management Database.*|.*Sophos Management Server.*|.*Sophos Remote Management System.*|.*Sophos Update Manager.*|.*Threat Protection.*|.*VirusScan.*|.*Webroot SecureAnywhere.*|.*Windows Defender.*"

Group by Attributes

This defines how matching events are aggregated, only events with the same matching attribute values are grouped into one unique incident ID


Aggregate Constraint

This is most typically a numerical constraint that defines when the rule should trigger an incident

COUNT(*) >= 1

Incident Attribute Mapping

This section defines which fields in matching raw events should be mapped to the incident attributes in the resulting incident.

The available raw event attributes to map are limited to the group by attributes and the aggregate event constraint fields for each subpattern

command = Filter.command,
hostName = Filter.hostName