Search Evasion Techniques
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SMB / Named Pipes Network Evasion
Named Pipes are a feature of the Windows operating system that allow for inter-process communication (IPC) using a pipe metaphor. These are particularly useful in networking scenarios as they can be made accessible over a network and facilitate a client-server model of communication. The SMB (Server Message Block) protocol is commonly used in Windows environments for shared access to files, …
NixImports Packers
A .NET malware loader employs API-Hashing and dynamic invocation to circumvent static analysis. NixImports utilizes managed API-Hashing to dynamically determine most of its required functions during runtime. For function resolution, HInvoke needs two specific hashes: typeHash and methodHash, representing the type name and the method's full name, respectively. At runtime, HInvoke scans the entire mscorlib to locate the corresponding type …
Exfiltration via SMTP Network Evasion
Exfiltration via SMTP is a technique where attackers leverage the Simple Mail Transfer Protocol (SMTP) to exfiltrate data. This method involves sending stolen data, such as sensitive files or system information, via email to an attacker-controlled email account. By using email traffic, attackers can often bypass traditional network monitoring solutions since SMTP traffic is usually deemed legitimate.
To execute …