Feature/rm submodule (#312)

* rm: submodule

* Add: rules

* Fix: hayabusa-rules to c9c10a

rules/sigma/process_creation/win_powershell_download.yml

@@ -0,0 +1,40 @@
+
+title: PowerShell Download from URL
+ruletype: Sigma
+author: Florian Roth, oscd.community, Jonhnathan Ribeiro
+date: 2019/01/16
+description: Detects a Powershell process that contains download commands in its command
+  line string
+detection:
+  SELECTION_1:
+    EventID: 1
+  SELECTION_2:
+    Image: '*\powershell.exe'
+  SELECTION_3:
+    CommandLine: '*new-object*'
+  SELECTION_4:
+    CommandLine: '*net.webclient).*'
+  SELECTION_5:
+    CommandLine: '*download*'
+  SELECTION_6:
+    CommandLine:
+    - '*string(*'
+    - '*file(*'
+  condition: (SELECTION_1 and SELECTION_2 and SELECTION_3 and SELECTION_4 and SELECTION_5
+    and SELECTION_6)
+falsepositives:
+- unknown
+fields:
+- CommandLine
+- ParentCommandLine
+id: 3b6ab547-8ec2-4991-b9d2-2b06702a48d7
+level: medium
+logsource:
+  category: process_creation
+  product: windows
+modified: 2021/11/27
+status: test
+tags:
+- attack.t1086
+- attack.execution
+- attack.t1059.001