Search Evasion Techniques
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98 item(s) found so far for this keyword.
GetLocalTime, GetSystemTime, timeGetTime, NtQueryPerformanceCounter Sandbox Evasion Anti-Debugging
When a debugger is present, and used to single-step through the code, there is a significant delay between the executions of the individual instructions, when compared to native execution.
Obscuring Control Flow Anti-Disassembly
Obscuring control flow is an anti-disassembling technique that involves using methods of flow control that are difficult or impossible for disassemblers and debuggers to follow. This can make it more difficult for analysts to understand the program's behavior and can also make it more difficult for other tools, such as debuggers, to accurately interpret the program.
One example of …
Reflective DLL injection Process Manipulating
Reflective DLL loading refers to loading a DLL from memory rather than from disk. Windows doesn’t have a LoadLibrary function that supports this, so to get the functionality you have to write your own, omitting some of the things Windows normally does, such as registering the DLL as a loaded module in the process, potentially bypassing DLL load monitoring.
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Process Doppelgänging Process Manipulating
This technique leverages the Transactional NTFS functionality in Windows. This functionality helps maintain data integrity during an unexpected error. For example, when an application needs to write or modify a file, if an error is triggered mid-write, the data can be corrupted. To avoid this kind of behavior, an application can open the file in a transactional mode to perform …
LOLbins Others
A lolbin (short for "Living Off the Land Binaries") is a legitimate Windows utility that can be used by adversaries to execute arbitrary commands. Various Windows utilities may be used to execute commands, possibly without invoking cmd. For example, the Program Compatibility Assistant (pcalua.exe) and components of the Windows Subsystem for Linux (WSL) are examples of lolbins that can be …
Inline Hooking Process Manipulating
Inline hooking is a technique used to intercept calls to target functions. It is commonly used by antiviruses, sandboxes, and malware to perform a variety of tasks, such as checking parameters, shimming, logging, spoofing returned data, and filtering calls.
The process of inline hooking involves directly modifying the code within the target function, usually by overwriting the first few …
RDTSCP Sandbox Evasion
Newer processors support a new instruction called RDTSCP which does the exact same thing as RDTSC, except that it does so serializing (meaning it waits for all instructions to execute before reading the counter. and that the possible reordering of the execution of the instructions is won that does not happen).
This instruction can be used to calculate the …
WordWarping Process Manipulating
Edit controls are a type of user interface element that allows a user to enter and edit text in a graphical user interface (GUI). They are commonly used in Windows applications and can be embedded directly into a GUI or subclassed as a separate window. Edit controls can be set to display text in multiline mode, in which case they …
Process Herpaderping Process Manipulating
Process Herpaderping is a method of obscuring the intentions of a process by modifying the content on a disk after the image has been mapped. This results in curious behavior by security products and the OS itself.
To abuse this convention, we first write a binary to a target file on a disk. Then, we map an image of …
User Interaction (Are you human?) Sandbox Evasion
You can get an advantage against sandboxes by using user interaction techniques. For example, The average user has a username and password and as long as the user you are targeting does not enter their password correctly, you can prevent your malware execution and bypass the possible sandbox control.