If you’ve ever been the victim of malware infection, chances are that you and your devices were duped by process injection. One of the most popular techniques used by hackers, process injection conceals malicious code to bypass firewalls and process-specific security mechanisms to launch damaging malware onto your devices. The bad guys inject code into another running process, and that process executes the hidden malicious code. Process injection is particularly dangerous because unlike other malware infections, victims have no way to potentially identify the threat—there is no suspicious clickable banner or pop-up—just concealed code. Because this technique is so prevalent in the hacker community, experts have uploaded demo videos on process injection so that people can understand the intricate methodology behind it.
Process injection can exist in a variety of forms. DLL injection and direct injection are two different types of process injection that involve alternative techniques to load malicious code into a process. DLL injection, or dynamic-link library injection, occurs when a malware author injects code into a remote process, causing a DLL to be loaded. The DLL, which contains malicious code, then infects the system and grants the author access to the system. Similar to DLL injection, direct injection involves allocating and inserting code into a remote process’ memory space to distribute malicious code. However, direct injection malware injects the malicious code directly into the remote process rather than requiring the remote process to load it. Direct injection, while more flexible than DLL injection, requires a significant amount of customized code in order to run without affecting the host process negatively.
Though process injection has been around for decades, it remains of the top techniques employed by those in the hacker community.