Added Sigma Rules

rules/Sigma/win_net_use_admin_share.yml

@@ -0,0 +1,34 @@
+title: Mounted Windows Admin Shares with net.exe
+author: oscd.community, Teymur Kheirkhabarov @HeirhabarovT, Zach Stanford @svch0st,
+    wagga
+date: 2020/10/05
+description: Detects when an admin share is mounted using net.exe
+detection:
+    SELECTION_1:
+        EventID: 1
+    SELECTION_2:
+        Image: '*\net.exe'
+    SELECTION_3:
+        Image: '*\net1.exe'
+    SELECTION_4:
+        CommandLine: '* use *'
+    SELECTION_5:
+        CommandLine: '*\\\*\\*$*'
+    condition: (SELECTION_1 and (SELECTION_2 or SELECTION_3) and SELECTION_4 and SELECTION_5)
+falsepositives:
+- Administrators
+id: 3abd6094-7027-475f-9630-8ab9be7b9725
+level: medium
+logsource:
+    category: process_creation
+    product: windows
+modified: 2021/06/27
+references:
+- https://drive.google.com/file/d/1lKya3_mLnR3UQuCoiYruO3qgu052_iS_/view
+status: experimental
+tags:
+- attack.lateral_movement
+- attack.t1021.002
+yml_filename: win_net_use_admin_share.yml
+yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/builtin
+