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 adjustments are made to the rest of the fields and dependencies 1. There are tools available to perform these changes. Any changes will invalidate digital signatures on binaries because the binary is being modified. Adversaries can remediate this issue by simply removing the LC_CODE_SIGNATURE command from the binary so that the signature isn’t checked at load time 2.
- Writing Bad Malware for OSX
- Malware Persistence on OS X
使用该技术的组织
参考表中尚无组织使用记录。
断言
尚无指向该技术的公开断言。
记录自动入库·未人工复核；置信度与有效期按引用读取。