// MITRE ATT&CK
T1546.001 · Change Default File Association
Sub-technique of T1546 · Event Triggered Execution.
Adversaries may establish persistence by executing malicious content triggered by a file type association. When a file is opened, the default program used to open the file (also called the file association or handler) is checked. File association selections are stored in the Windows Registry and can...
How to detect & mitigate it
Detecting Change Default File Association starts with your SIEM/EDR telemetry. Write a detection rule with the Sigma generator, analyze suspicious logs in the log analyzer, and place the technique on your coverage with the ATT&CK matrix.
Related techniques
T1546.013
PowerShell Profile T1546.006
LC_LOAD_DYLIB Addition T1548.002
Bypass User Account Control T1548.003
Sudo and Sudo Caching T1546.011
Application Shimming T1611
Escape to Host T1546.005
Trap T1548
Abuse Elevation Control Mechanism
PowerShell Profile T1546.006
LC_LOAD_DYLIB Addition T1548.002
Bypass User Account Control T1548.003
Sudo and Sudo Caching T1546.011
Application Shimming T1611
Escape to Host T1546.005
Trap T1548
Abuse Elevation Control Mechanism
Source: MITRE ATT&CK®. ATT&CK is a registered trademark of The MITRE Corporation. Content for educational purposes.