Common Information
| Type | Value |
|---|---|
| Value |
Extra Window Memory Injection - T1181 |
| Category | Attack-Pattern |
| Type | Mitre-Enterprise-Attack-Attack-Pattern |
| Misp Type | Cluster |
| Description | Before creating a window, graphical Windows-based processes must prescribe to or register a windows class, which stipulate appearance and behavior (via windows procedures, which are functions that handle input/output of data). (Citation: Microsoft Window Classes) Registration of new windows classes can include a request for up to 40 bytes of extra window memory (EWM) to be appended to the allocated memory of each instance of that class. This EWM is intended to store data specific to that window and has specific application programming interface (API) functions to set and get its value. (Citation: Microsoft GetWindowLong function) (Citation: Microsoft SetWindowLong function) Although small, the EWM is large enough to store a 32-bit pointer and is often used to point to a windows procedure. Malware may possibly utilize this memory location in part of an attack chain that includes writing code to shared sections of the process’s memory, placing a pointer to the code in EWM, then invoking execution by returning execution control to the address in the process’s EWM. Execution granted through EWM injection may take place in the address space of a separate live process. Similar to Process Injection, this may allow access to both the target process's memory and possibly elevated privileges. Writing payloads to shared sections also avoids the use of highly monitored API calls such as WriteProcessMemory and CreateRemoteThread. (Citation: Engame Process Injection July 2017) More sophisticated malware samples may also potentially bypass protection mechanisms such as data execution prevention (DEP) by triggering a combination of windows procedures and other system functions that will rewrite the malicious payload inside an executable portion of the target process. (Citation: MalwareTech Power Loader Aug 2013) (Citation: WeLiveSecurity Gapz and Redyms Mar 2013) Detection: Monitor for API calls related to enumerating and manipulating EWM such as GetWindowLong (Citation: Microsoft GetWindowLong function) and SetWindowLong (Citation: Microsoft SetWindowLong function). Malware associated with this technique have also used SendNotifyMessage (Citation: Microsoft SendNotifyMessage function) to trigger the associated window procedure and eventual malicious injection. (Citation: Engame Process Injection July 2017) Platforms: Windows Defense Bypassed: Anti-virus, Host intrusion prevention systems, Data Execution Prevention Permissions Required: Administrator, SYSTEM |
| Details | Published | Attributes | CTI | Title | ||
|---|---|---|---|---|---|---|
| Details | Website | 2023-07-14 | 1 | SOC202-FakeGPT Malicious Chrome Extension (LetsDefend) | ||
| Details | Website | 2017-07-18 | 21 | Ten process injection techniques: A technical survey of common and trending process injection techniques | ||
| Details | Website | 2017-07-18 | 21 | Ten Process Injection Techniques: A Technical Survey Of Common And Trending Process Injection Techniques |