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 …

DNS API Injection Process Manipulating

DNS API injection is a technique used by malware to evade detection by intercepting and modifying DNS (Domain Name System) requests made by a host system. The technique involves injecting code into the DNS API (Application Programming Interface) of the host system, which is a set of functions and protocols that allow communication with the DNS service. By injecting code …

Execution Guardrails: Environmental Keying Defense Evasion [Mitre]

Adversaries may environmentally key payloads or other features of malware to evade defenses and constraint execution to a specific target environment. Environmental keying uses cryptography to constrain execution or actions based on adversary supplied environment specific conditions that are expected to be present on the target. Environmental keying is an implementation of Execution Guardrails that utilizes cryptographic techniques for deriving …

Detecting Online Sandbox Sandbox Evasion

Online sandbox has become very popular for malware analysis. Several malware authors employ such techniques to avoid detection and analysis. Some of these techniques will be summarized here.

Any.Run uses a fake root certificate to spy on sandbox traffic. The first information about the system can be obtained by querying the information of the root certificate. In …

ProcEnvInjection - Remote code injection by abusing process environment strings Process Manipulating

This method allows to inject custom code into a remote process without using WriteProcessMemory - It will use the lpEnvironment parameter in CreateProcess to copy the code into the target process. This technique can be used to load a DLL into a remote process, or simply execute a block of code.

The lpEnvironment parameter in CreateProcess allows us to …

Unloading Sysmon Driver Anti-Monitoring

Sysmon is a tool that can be used to monitor system activity on Windows systems. It records various types of events, such as process creation, network connections, and registry changes, and stores them in the Windows Event Log. Security analysts can use this information to detect and investigate malicious activity on a system.

One way that malware can evade …

Themida Packers

Themida is a commercial known packer that embeds several features including anti-debugging, virtual machine emulation, encryption...

Anti-debugger techniques that detect/fool any kind of debugger
Anti-memory dumpers techniques for any Ring3 and Ring0 dumpers
Different encryption algorithms and keys in each protected application
Anti-API scanners techniques that avoids reconstruction …

ConfuserEx Packers

ConfuserEx is a open-source protector for .NET applications. It is the successor of Confuser project. It's primarily designed to make reverse engineering difficult for applications written in .NET languages like C# and VB.NET. ConfuserEx does this by using a variety of techniques like symbol renaming, control flow obfuscation, and encryption of strings and resources.

Supports .NET …

PESpin Packers

PESpin is a Windows executable files protector, compressor coded in Win32ASM using MASM. Overall, this application will enable the compression of the entire executable - code, data, and resources, thus leaving the file protected against patching or disassembling.

CloudEye/DarkEye Packers

CloudEyE, an evolved version of DarkEyE, allows threat actors to use different types of malware of their choice and make it undetectable to anti-virus solutions. This program is being sold by legitimate Italian company which markets it as a tool for developers that want to protect their program from piracy and reverse engineering. The tutorials published and forum posts about …

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