Added Sigma Rules

rules/Sigma/sysmon_delete_prefetch.yml

@@ -0,0 +1,33 @@
+title: Prefetch File Deletion
+author: Cedric MAURUGEON
+date: 2021/09/29
+description: Detects the deletion of a prefetch file (AntiForensic)
+detection:
+    SELECTION_1:
+        EventID: 23
+    SELECTION_2:
+        EventID: 26
+    SELECTION_3:
+        TargetFilename: C:\Windows\Prefetch\\*
+    SELECTION_4:
+        TargetFilename: '*.pf'
+    SELECTION_5:
+        Image: C:\windows\system32\svchost.exe
+    SELECTION_6:
+        User: NT AUTHORITY\SYSTEM
+    condition: ((SELECTION_1 or SELECTION_2) and (SELECTION_3 and SELECTION_4) and  not
+        (SELECTION_5 and SELECTION_6))
+falsepositives:
+- Unknown
+id: 0a1f9d29-6465-4776-b091-7f43b26e4c89
+level: high
+logsource:
+    category: file_delete
+    product: windows
+status: experimental
+tags:
+- attack.defense_evasion
+- attack.t1070.004
+yml_filename: sysmon_delete_prefetch.yml
+yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/file_delete
+