Save the Environment (Variable)

The first argument of a program's command line, typically reflecting the program's name/path and often referred to as `argv[0]`, can in most cases be set to an arbitrary value without affecting the process' flow. Making the case against `argv[0]`, this post demonstrates how it can be used to deceive security analysts, bypass detections and break...

Many Windows applications have multiple ways in which the same command line can be expressed, usually for compatibility or ease-of-use reasons. As a result, command-line arguments are implemented inconsistently making detecting specific commands harder due to the number of variations. This post shows how more than 40 often-used, built-in Windows...

DLL Hijacking is a popular technique for executing malicious payloads. This post lists nearly 300 executables vulnerable to relative path DLL Hijacking on Windows 10 (1909), and shows how with a few lines of VBScript some of the DLL hijacks can be executed with elevated privileges, bypassing UAC.

PowerShell has built-in functionality to save sensitive plaintext data to an encrypted object called `SecureString`. Malicious actors have exploited this functionality as a means to obfuscate PowerShell commands. This blog post discusses `SecureString`, examples seen in the wild, and presents a tool...

By adding two parameters to any Google Search URL, you can replace search results with a Knowledge Graph card of your choice. A malicious user can use this to generate false information or 'fake news'.