Search Evasion Techniques
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PyArmor Packers
Pyarmor is a command-line tool primarily used for the obfuscation of Python scripts. While its original design aims to protect Python code from unauthorized access and reverse engineering, its capabilities also make it a tool of interest for malware obfuscation. Pyarmor achieves this through several key features, each with potential applications in both legitimate protection and malicious exploitation:
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Checking Installed Software Sandbox Evasion
By detecting the presence of certain software and tools commonly used in sandbox environments, such as Python interpreters, tracing utilities, debugging tools, and virtual machine software like VMware, it is possible to infer the existence of a sandbox.
This inference is based on the premise that such tools are often found in sandbox setups used for dynamic malware analysis …
Hijack Execution Flow: Path Interception by PATH Environment Variable Defense Evasion [Mitre]
Adversaries may execute their own malicious payloads by hijacking environment variables used to load libraries. Adversaries may place a program in an earlier entry in the list of directories stored in the PATH environment variable, which Windows will then execute when it searches sequentially through that PATH listing in search of the binary that was called from a script or …