separate rules to submodule (#304)

* rm: rules

* Add: hayabusa-rules to submodule

rules/sigma/powershell/powershell_script/powershell_keylogging.yml

@@ -1,31 +0,0 @@
-
-title: Powershell Keylogging
-author: frack113
-date: 2021/07/30
-description: Adversaries may log user keystrokes to intercept credentials as the user
-  types them.
-detection:
-  SELECTION_1:
-    ScriptBlockText: '*Get-Keystrokes*'
-  SELECTION_2:
-    ScriptBlockText: '*Get-ProcAddress user32.dll GetAsyncKeyState*'
-  SELECTION_3:
-    ScriptBlockText: '*Get-ProcAddress user32.dll GetForegroundWindow*'
-  condition: (SELECTION_1 or (SELECTION_2 and SELECTION_3))
-falsepositives:
-- Unknown
-id: 34f90d3c-c297-49e9-b26d-911b05a4866c
-level: medium
-logsource:
-  category: ps_script
-  definition: EnableScriptBlockLogging must be set to enable
-  product: windows
-modified: 2021/10/16
-references:
-- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1218/T1218.md
-- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1056.001/src/Get-Keystrokes.ps1
-status: experimental
-tags:
-- attack.collection
-- attack.t1056.001
-ruletype: SIGMA