Merge pull request #3863 from redsand/fp_aws_worker_posh_ps_susp

FP: call of window style hidden is embedded in AWS code.

rules/windows/powershell/powershell_script/posh_ps_susp_windowstyle.yml

@@ -6,9 +6,9 @@ description: |
     In some cases, windows that would typically be displayed when an application carries out an operation can be hidden
 references:
     - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1564.003/T1564.003.md
-author: frack113
+author: frack113, Tim Shelton (fp AWS)
 date: 2021/10/20
-modified: 2022/12/25
+modified: 2023/01/03
 tags:
     - attack.defense_evasion
     - attack.t1564.003
@@ -22,7 +22,11 @@ detection:
             - 'powershell'
             - 'WindowStyle'
             - 'Hidden'
-    condition: selection
+    filter:
+        ScriptBlockText|contains|all:
+            - ':\Program Files\Amazon\WorkSpacesConfig\Scripts\'
+            - '$PSScriptRoot\Module\WorkspaceScriptModule\WorkspaceScriptModule'
+    condition: selection and not filter
 falsepositives:
     - Unknown
 level: medium