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Detectionhightest

Invoke-Obfuscation Via Use MSHTA - Security

Detects Obfuscated Powershell via use MSHTA in Scripts

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Launch
Nikita Nazarov, oscd.communityCreated Fri Oct 09Updated Tue Nov 299b8d9203-4e0f-4cd9-bb06-4cc4ea6d0e9awindows
Log Source
Windowssecurity
ProductWindows← raw: windows
Servicesecurity← raw: security

Definition

The 'System Security Extension' audit subcategory need to be enabled to log the EID 4697

Detection Logic
Detection Logic1 selector
detection:
    selection:
        EventID: 4697
        ServiceFileName|contains|all:
            - 'mshta'
            - 'vbscript:createobject'
            - '.run'
            - 'window.close'
    condition: selection
False Positives
Unknown

False positive likelihood has not been assessed. Additional context may be needed during triage.

References
1
Resolving title…
github.com
MITRE ATT&CK
Related Rules
DerivedDetectionhigh

Invoke-Obfuscation Via Use MSHTA - System

Detects Obfuscated Powershell via use MSHTA in Scripts

This rule was derived from the related rule - both detect similar activity with different scope.

Rule Metadata
Rule ID
9b8d9203-4e0f-4cd9-bb06-4cc4ea6d0e9a
Status
test
Level
high
Type
Detection
Created
Fri Oct 09
Modified
Tue Nov 29
Author
Nikita Nazarov, oscd.community
Path
rules/windows/builtin/security/win_security_invoke_obfuscation_via_use_mshta_services_security.yml
Raw Tags
attack.defense-evasionattack.t1027attack.executionattack.t1059.001
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