From d7acbb369ed8f37f9b6728d28d8848dad3619ab4 Mon Sep 17 00:00:00 2001
From: svch0stz <8684257+svch0stz@users.noreply.github.com>
Date: Wed, 7 Oct 2020 17:22:09 +1100
Subject: [PATCH] Created powershell_suspicious_mounted_share_deletion.yml

---
 ...hell_suspicious_mounted_share_deletion.yml | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 rules/windows/powershell/powershell_suspicious_mounted_share_deletion.yml

diff --git a/rules/windows/powershell/powershell_suspicious_mounted_share_deletion.yml b/rules/windows/powershell/powershell_suspicious_mounted_share_deletion.yml
new file mode 100644
index 00000000..aa341c16
--- /dev/null
+++ b/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
\ No newline at end of file