Search Evasion Techniques
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Virtualization/Sandbox Evasion: Time Based Evasion Defense Evasion [Mitre]
Adversaries may employ various time-based methods to detect and avoid virtualization and analysis environments. This may include enumerating time-based properties, such as uptime or the system clock, as well as the use of timers or other triggers to avoid a virtual machine environment (VME) or sandbox, specifically those that are automated or only operate for a limited amount of time. …
Impair Defenses: Indicator Blocking Defense Evasion [Mitre]
An adversary may attempt to block indicators or events typically captured by sensors from being gathered and analyzed. This could include maliciously redirecting or even disabling host-based sensors, such as Event Tracing for Windows (ETW), by tampering settings that control the collection and flow of event telemetry. These settings may be stored on the system in configuration files and/or in …
Base64 Data Obfuscation
Base64 is a simple encoding scheme that is often used by malware to represent binary data in an ASCII string. This allows the malware to encode and transmit binary data, such as a payload or network traffic, in a way that is more compact and easier to transmit over text-based communication channels.
Base64 uses a 64-character alphabet to encode the …
EventPairHandles Anti-Debugging
An EventPair Object is an event constructed by two _KEVENT structures which are conventionally named High and Low.
There is a relation between generic Event Objects and Debuggers because they must create a custom event called DebugEvent able to handle exceptions. Due to the presence of events owned by the Debugger, every information relative to the events of a normal …