Techniques › T1055.012 › AN1076
AN1076 Analytic 1076
Windows · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Detects adversary use of suspended process creation, using the CREATE_SUSPENDED flag via CreateProcess, followed by unmapping the memory of the child process (NtUnmapViewOfSection) and replacing it with malicious code via VirtualAllocEx/WriteProcessMemory, then SetThreadContext and ResumeThread to begin execution within the hollowed process.</p>
- Detects
- T1055.012 Process Hollowing
- Part of
- DET0382 Detection Strategy for Process Hollowing on Windows
Log sources and channels
Exactly as MITRE states them in x_mitre_log_source_references. Where a channel is vague, it is vague in the source; kevmap does not tidy it.
| Log source | Channel | Data component |
|---|---|---|
| WinEventLog:Sysmon | EventCode=1 | DC0032 Process Creation |
| WinEventLog:Sysmon | EventCode=10 | DC0035 Process Access |
| WinEventLog:Sysmon | EventCode=8 | DC0020 Process Modification |
| etw:Microsoft-Windows-Kernel-Process | NtUnmapViewOfSection, VirtualAllocEx, WriteProcessMemory, SetThreadContext, ResumeThread | DC0021 OS API Execution |
Mutable elements
Parameters MITRE marks as environment-specific. These are the knobs you are expected to tune; they are why an analytic is not a rule.
| Field | Description |
|---|---|
HollowedImageNamePattern | Regex to match common decoy executables used for hollowing (e.g., 'svchost.exe', 'notepad.exe') |
TimeWindow_ProcessCreateToResume | Temporal threshold for unmap/write/execute sequence (e.g., within 5–10 seconds) |
SuspendedProcessStartFlag | CreateProcess flag used to identify suspended thread creation |
MemoryWriteSizeThreshold | Minimum byte size to flag suspicious memory overwrite in hollowed process |
KEV CVEs whose mapped technique this analytic detects
| CVE | Vendor / product | State |
|---|---|---|
| CVE-2023-0386 | Linux Kernel | Stale |