Event Triggered Execution: LC_LOAD_DYLIB Addition, Sub-technique T1546.006 - Enterprise
Excerpt
Adversaries may establish persistence by executing malicious content triggered by the execution of tainted binaries. Mach-O binaries have a series of headers that are used to perform certain operations when a binary is loaded. The LC_LOAD_DYLIB header in a Mach-O binary tells macOS and OS X which dynamic libraries (dylibs) to load during execution time. These can be added ad-hoc to the compiled binary as long as adjustments are made to the rest of the fields and dependencies.[1] There are tools available to perform these changes. Adversaries may modify Mach-O binary headers to load and execute malicious dylibs every time the binary is executed. Although any chan…
The opening of the report, shown for reference. The full report, with its figures and indicators, is published by MITRE ATT&CK on attack.mitre.org.
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