ルール更新 (#224)

2021-11-23 15:04:03 +09:00
parent 034f9c0957
commit 015899bc51
2224 changed files with 2916 additions and 47186 deletions
--- a/rules/sigma/process_creation/win_powershell_b64_shellcode.yml
+++ b/rules/sigma/process_creation/win_powershell_b64_shellcode.yml
@@ -0,0 +1,29 @@
+
+title: PowerShell Base64 Encoded Shellcode
+author: Florian Roth
+date: 2018/11/17
+description: Detects Base64 encoded Shellcode
+detection:
+  SELECTION_1:
+    EventID: 1
+  SELECTION_2:
+    CommandLine: '*AAAAYInlM*'
+  SELECTION_3:
+    CommandLine:
+    - '*OiCAAAAYInlM*'
+    - '*OiJAAAAYInlM*'
+  condition: (SELECTION_1 and SELECTION_2 and SELECTION_3)
+falsepositives:
+- Unknown
+id: 2d117e49-e626-4c7c-bd1f-c3c0147774c8
+level: critical
+logsource:
+  category: process_creation
+  product: windows
+modified: 2020/09/01
+references:
+- https://twitter.com/cyb3rops/status/1063072865992523776
+status: experimental
+tags:
+- attack.defense_evasion
+- attack.t1027