Added Sigma Rules

rules/Sigma/win_script_event_consumer_spawn.yml

@@ -0,0 +1,54 @@
+title: Script Event Consumer Spawning Process
+author: Sittikorn S
+date: 2021/06/21
+description: Detects a suspicious child process of Script Event Consumer (scrcons.exe).
+detection:
+    SELECTION_1:
+        EventID: 1
+    SELECTION_10:
+        Image: '*\mshta.exe'
+    SELECTION_11:
+        Image: '*\rundll32.exe'
+    SELECTION_12:
+        Image: '*\msiexec.exe'
+    SELECTION_13:
+        Image: '*\msbuild.exe'
+    SELECTION_2:
+        ParentImage: '*\scrcons.exe'
+    SELECTION_3:
+        Image: '*\svchost.exe'
+    SELECTION_4:
+        Image: '*\dllhost.exe'
+    SELECTION_5:
+        Image: '*\powershell.exe'
+    SELECTION_6:
+        Image: '*\wscript.exe'
+    SELECTION_7:
+        Image: '*\cscript.exe'
+    SELECTION_8:
+        Image: '*\schtasks.exe'
+    SELECTION_9:
+        Image: '*\regsvr32.exe'
+    condition: (SELECTION_1 and (SELECTION_2) and (SELECTION_3 or SELECTION_4 or SELECTION_5
+        or SELECTION_6 or SELECTION_7 or SELECTION_8 or SELECTION_9 or SELECTION_10
+        or SELECTION_11 or SELECTION_12 or SELECTION_13))
+falsepositives:
+- unknown
+fields:
+- CommandLine
+- ParentCommandLine
+id: f6d1dd2f-b8ce-40ca-bc23-062efb686b34
+level: high
+logsource:
+    category: process_creation
+    product: windows
+references:
+- https://redcanary.com/blog/child-processes/
+- https://docs.paloaltonetworks.com/cortex/cortex-xdr/cortex-xdr-analytics-alert-reference/cortex-xdr-analytics-alert-reference/scrcons-exe-rare-child-process.html
+status: experimental
+tags:
+- attack.execution
+- attack.t1047
+yml_filename: win_script_event_consumer_spawn.yml
+yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation
+