Created powershell_suspicious_mounted_share_deletion.yml

rules/windows/powershell/powershell_suspicious_mounted_share_deletion.yml

@@ -0,0 +1,24 @@
+title: Mounted Share was Deleted using PowerShell
+id: 66a4d409-451b-4151-94f4-a55d559c49b0
+status: experimental
+description: Detects when when a mounted share is removed. Adversaries may remove share connections that are no longer useful in order to clean up traces of their operation
+references:
+    - https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1070.005/T1070.005.md
+author: 'oscd.community, @redcanary, Zach Stanford @svch0st'
+date: 2020/10/08
+tags:
+    - attack.defense_evasion
+    - attack.t1070.005
+logsource:
+    product: windows
+    service: powershell
+detection:
+    selection:
+        EventID: 4104
+        ScriptBlockText|contains:
+          - 'Remove-SmbShare'
+          - 'Remove-FileShare'
+    condition: selection
+falsepositives:
+    - Administrators or Power users may remove their shares via cmd line
+level: medium