ルール更新 (#224)

rules/sigma/file_delete/sysmon_delete_prefetch.yml

@@ -0,0 +1,31 @@
+
+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

rules/sigma/file_delete/sysmon_sysinternals_sdelete_file_deletion.yml

@@ -0,0 +1,30 @@
+
+title: Sysinternals SDelete File Deletion
+author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
+date: 2020/05/02
+description: A General detection to trigger for the deletion of files by Sysinternals
+  SDelete. It looks for the common name pattern used to rename files.
+detection:
+  SELECTION_1:
+    EventID: 23
+  SELECTION_2:
+    EventID: 26
+  SELECTION_3:
+    TargetFilename:
+    - '*.AAA'
+    - '*.ZZZ'
+  condition: ((SELECTION_1 or SELECTION_2) and SELECTION_3)
+falsepositives:
+- Legitime usage of SDelete
+id: 6ddab845-b1b8-49c2-bbf7-1a11967f64bc
+level: medium
+logsource:
+  category: file_delete
+  product: windows
+references:
+- https://github.com/OTRF/detection-hackathon-apt29/issues/9
+- https://threathunterplaybook.com/evals/apt29/detections/4.B.4_83D62033-105A-4A02-8B75-DAB52D8D51EC.html
+status: experimental
+tags:
+- attack.defense_evasion
+- attack.t1070.004

rules/sigma/file_delete/win_cve_2021_1675_printspooler_del.yml

@@ -0,0 +1,33 @@
+
+title: Windows Spooler Service Suspicious File Deletion
+author: Bhabesh Raj
+date: 2021/07/01
+description: Detect DLL deletions from Spooler Service driver folder
+detection:
+  SELECTION_1:
+    EventID: 23
+  SELECTION_2:
+    EventID: 26
+  SELECTION_3:
+    Image: '*spoolsv.exe'
+  SELECTION_4:
+    TargetFilename: '*C:\Windows\System32\spool\drivers\x64\3\\*'
+  condition: ((SELECTION_1 or SELECTION_2) and SELECTION_3 and SELECTION_4)
+falsepositives:
+- Unknown
+id: 5b2bbc47-dead-4ef7-8908-0cf73fcbecbf
+level: high
+logsource:
+  category: file_delete
+  product: windows
+modified: 2021/08/24
+references:
+- https://github.com/hhlxf/PrintNightmare
+- https://github.com/cube0x0/CVE-2021-1675
+status: experimental
+tags:
+- attack.persistence
+- attack.defense_evasion
+- attack.privilege_escalation
+- attack.t1574
+- cve.2021.1675