Search Evasion Techniques
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CPUID Sandbox Evasion
The CPUID instruction is a low-level command that allows you to retrieve information about the CPU that is currently running. This instruction, which is executed at the CPU level (using the bytecode 0FA2), is available on all processors that are based on the Pentium architecture or newer.
You can use the CPUID instruction to retrieve various pieces of information …
Jump With Same Target Anti-Disassembly
Jump with the same target is an anti-disassembling technique that involves using back-to-back conditional jump instructions that both point to the same target. This can make it difficult for a disassembler to accurately reconstruct the original instructions of the program, as the disassembler will not be able to determine the intended behavior of the program without actually executing it.
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Dynamically Computed Target Address Anti-Disassembly
Dynamically computed target addresses is an anti-disassembling technique that involves using dynamically computed addresses as the targets of branch instructions in a program. This can make it difficult for a disassembler to accurately reconstruct the original instructions of the program, as the disassembler will not be able to determine the correct target addresses for the branch instructions without actually executing …
Process Hollowing, RunPE Process Manipulating
Process hollowing is a technique used by malware to evade detection by injecting malicious code into a legitimate process. This technique involves creating a new instance of a legitimate process and replacing its original code with the malicious payload.
The process is the following:
CreateProcess: in a suspended mode with the CreationFlag at 0x0000 0004.…
INT 0x2D Anti-Debugging
When the instruction INT2D is executed, the exception EXCEPTION_BREAKPOINT is raised. Windows uses the EIP register as an exception address and then increments the EIP register value. Windows also examines the value of the EAX register while INT2D is executed.