Search Evasion Techniques
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System Binary Proxy Execution: InstallUtil Defense Evasion [Mitre]
Adversaries may use InstallUtil to proxy execution of code through a trusted Windows utility. InstallUtil is a command-line utility that allows for installation and uninstallation of resources by executing specific installer components specified in .NET binaries. The InstallUtil binary may also be digitally signed by Microsoft and located in the .NET directories on a Windows system: C:\Windows\Microsoft.NET\Framework\v\InstallUtil.exe and …
Propagate Process Manipulating
This technique involves modifying the internal properties of a window in order to intercept and modify or monitor the behavior of the window when it receives messages. To do this, an application creates a buffer containing shellcode and injects it into the target process.
Then, it modifies the internal structure used by the specific properties, such as UxSubclassInfo and CC32SubclassInfo, …
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 …
Atom Bombing Process Manipulating
Atom Bombing is a technique that utilizes Windows Atom Tables, which provide a global storage mechanism for strings, to inject malicious code into a target process.
The technique involves storing a shellcode in an Atom Table, then using the NtQueueApcThread function to force the targeted process to access the specific Atom, causing the injection to occur. To bypass Data Execution …
Hide Artifacts: Hidden Window Defense Evasion [Mitre]
Adversaries may use hidden windows to conceal malicious activity from the plain sight of users. In some cases, windows that would typically be displayed when an application carries out an operation can be hidden. This may be utilized by system administrators to avoid disrupting user work environments when carrying out administrative tasks.
On Windows, there are a variety of features …
Killing Windows Event Log Anti-Forensic
Killing the Windows Event Log is a technique used by malware to prevent security professionals from detecting and analyzing it. Svchost.exe is a process that manages services on Windows operating systems.
By grouping multiple services into a single process, Svchost.exe conserves computing resources and reduces resource consumption. However, this also means that Svchost.exe manages the Event Log service, which is …
ConsoleWindowClass Process Manipulating
One method that has been used to achieve process injection is by manipulating the User Data of a window object.
The User Data of a window is a small amount of memory that is usually used to store a pointer to a class object. This memory can be set using the SetWindowLongPtr API and the GWLP_USERDATA parameter. In the case …
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 Injection: ListPlanting Defense Evasion [Mitre]
Adversaries may abuse list-view controls to inject malicious code into hijacked processes in order to evade process-based defenses as well as possibly elevate privileges. ListPlanting is a method of executing arbitrary code in the address space of a separate live process. Code executed via ListPlanting may also evade detection from security products since the execution is masked under a legitimate …
CLIPBRDWNDCLASS Process Manipulating
CLIPBRDWNDCLASS is a window class that is registered by the Object Linking & Embedding (OLE) library (ole32.dll) to handle clipboard data. When a window of this class is created, it is assigned a number of window properties that store the addresses of various interfaces that are used to process clipboard data. These interfaces include the ClipboardDataObjectInterface, ClipboardRootDataObjectInterface, and …