Cross-source coverage

T1121 / ATT&CK

Regsvcs/Regasm

ATT&CK has retired this technique. Rules still tag it; the current id is T1218.009 System Binary Proxy Execution: Regsvcs/Regasm.

1 rule across 1 source.

Showing deprecated rules · back to the default

From MITRE ATT&CK 19.2

Regsvcs and Regasm are Windows command-line utilities that are used to register.NET Component Object Model (COM) assemblies. Both are digitally signed by Microsoft.

Adversaries can use Regsvcs and Regasm to proxy execution of code through a trusted Windows utility. Both utilities may be used to bypass process whitelisting through use of attributes within the binary to specify code that should be run before registration or unregistration: [ComRegisterFunction] or [ComUnregisterFunction] respectively. The code with the registration and unregistration attributes will be executed even if the process is run under insufficient privileges and fails to execute.

Tactics
Stealth · Execution
Platforms
Windows
Telemetry

chronicle/detection-rules

1 rule
Detection Severity Format
possible_applocker_bypass Undefined YARA-L

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