ルール更新 (#224)

rules/sigma/powershell/powershell_script/powershell_suspicious_recon.yml

@@ -0,0 +1,30 @@
+
+title: Recon Information for Export with PowerShell
+author: frack113
+date: 2021/07/30
+description: Once established within a system or network, an adversary may use automated
+  techniques for collecting internal data
+detection:
+  SELECTION_1:
+    ScriptBlockText:
+    - '*Get-Service *'
+    - '*Get-ChildItem *'
+    - '*Get-Process *'
+  SELECTION_2:
+    ScriptBlockText: '*> $env:TEMP\\*'
+  condition: (SELECTION_1 and SELECTION_2)
+falsepositives:
+- Unknown
+id: a9723fcc-881c-424c-8709-fd61442ab3c3
+level: medium
+logsource:
+  category: ps_script
+  definition: Script block logging must be enabled
+  product: windows
+modified: 2021/10/16
+references:
+- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1119/T1119.md
+status: experimental
+tags:
+- attack.collection
+- attack.t1119