add process_creation_susp_del

rules/windows/process_creation/process_creation_susp_del.yml

@@ -0,0 +1,31 @@
+title: Suspicious Del in CommandLine
+id: 204b17ae-4007-471b-917b-b917b315c5db
+status: experimental
+description: suspicious command line to remove exe or dll
+author: frack113
+date: 2021/10/26
+references:
+    - https://www.joesandbox.com/analysis/509330/0/html#1044F3BDBE3BB6F734E357235F4D5898582D
+tags:
+    - attack.defense_evasion
+    - attack.t1070.004 
+logsource:
+    category: process_creation
+    product: windows
+detection:
+    susp_del_exe:
+        CommandLine|contains|all:
+            - 'del '
+            - '/f '
+            - '/q '
+            - '.exe'
+    susp_del_dll:
+        CommandLine|contains|all:
+            - 'del '
+            - 'C:\ProgramData\'
+            - '.dll'
+    condition: susp_del_exe or susp_del_dll
+#cmd.exe (PID: 1044 cmdline: 'C:\Windows\System32\cmd.exe' /c taskkill /im A8D4.exe /f & timeout /t 6 & del /f /q 'C:\Users\user~1\AppData\Local\Temp\A8D4.exe' & del C:\ProgramData\*.dll & exit 
+falsepositives:
+    - unknown
+level: medium