Added Sigma Rules

rules/Sigma/process_creation_coti_sqlcmd.yml

@@ -0,0 +1,38 @@
+title: Conti Backup Database
+author: frack113
+date: 2021/08/16
+description: Detects a command used by conti to dump database
+detection:
+    SELECTION_1:
+        EventID: 1
+    SELECTION_2:
+        CommandLine: '*sqlcmd *'
+    SELECTION_3:
+        CommandLine: '*sqlcmd.exe*'
+    SELECTION_4:
+        CommandLine: '* -S localhost *'
+    SELECTION_5:
+        CommandLine: '*sys.sysprocesses*'
+    SELECTION_6:
+        CommandLine: '*master.dbo.sysdatabases*'
+    SELECTION_7:
+        CommandLine: '*BACKUP DATABASE*'
+    condition: (SELECTION_1 and (SELECTION_2 or SELECTION_3) and SELECTION_4 and (SELECTION_5
+        or SELECTION_6 or SELECTION_7))
+falsepositives:
+- Unknown
+id: 2f47f1fd-0901-466e-a770-3b7092834a1b
+level: high
+logsource:
+    category: process_creation
+    product: windows
+references:
+- https://twitter.com/vxunderground/status/1423336151860002816?s=20
+- https://www.virustotal.com/gui/file/03e9b8c2e86d6db450e5eceec057d7e369ee2389b9daecaf06331a95410aa5f8/detection
+- https://docs.microsoft.com/en-us/sql/tools/sqlcmd-utility?view=sql-server-ver15
+status: experimental
+tags:
+- attack.collection
+yml_filename: process_creation_coti_sqlcmd.yml
+yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation
+