Feature/rm submodule (#312)

* rm: submodule

* Add: rules

* Fix: hayabusa-rules to c9c10a

rules/sigma/process_creation/win_powershell_dll_execution.yml

@@ -0,0 +1,35 @@
+
+title: Detection of PowerShell Execution via DLL
+ruletype: Sigma
+author: Markus Neis
+date: 2018/08/25
+description: Detects PowerShell Strings applied to rundll as seen in PowerShdll.dll
+detection:
+  SELECTION_1:
+    EventID: 1
+  SELECTION_2:
+    Image:
+    - '*\rundll32.exe'
+  SELECTION_3:
+    Description:
+    - '*Windows-Hostprozess (Rundll32)*'
+  SELECTION_4:
+    CommandLine:
+    - '*Default.GetString*'
+    - '*FromBase64String*'
+  condition: (SELECTION_1 and (SELECTION_2 or SELECTION_3) and SELECTION_4)
+falsepositives:
+- Unknown
+id: 6812a10b-60ea-420c-832f-dfcc33b646ba
+level: high
+logsource:
+  category: process_creation
+  product: windows
+modified: 2021/11/27
+references:
+- https://github.com/p3nt4/PowerShdll/blob/master/README.md
+status: test
+tags:
+- attack.defense_evasion
+- attack.t1085
+- attack.t1218.011