rules: add nursery rule for shellcode execution via ReadDirectoryChanges #1140
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| rule: | ||
| meta: | ||
| name: execute shellcode via ReadDirectoryChanges | ||
| namespace: load-code/shellcode | ||
| authors: | ||
| - akshatpal@users.noreply.github.com | ||
| description: detect execution of arbitrary shellcode via ReadDirectoryChanges completion routines | ||
| scopes: | ||
| static: function | ||
| dynamic: span of calls | ||
| att&ck: | ||
| - Defense Evasion::Reflective Code Loading [T1620] | ||
| mbc: | ||
| - Defense Evasion::Hijack Execution Flow::Abuse Windows Function Calls [F0015.006] | ||
| references: | ||
| - https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-readdirectorychangesw | ||
| - https://learn.microsoft.com/en-us/windows/win32/api/minwinbase/nc-minwinbase-lpoverlapped_completion_routine | ||
| features: | ||
| - and: | ||
| - match: allocate or change RWX memory | ||
| - or: | ||
| - api: ReadDirectoryChanges | ||
| - api: ReadDirectoryChangesEx | ||
| - or: | ||
| - api: SleepEx | ||
| - api: WaitForSingleObjectEx | ||
| - api: WaitForMultipleObjectsEx | ||
| - optional: | ||
| - api: CreateFile | ||
|
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