Merge pull request #28 from neu5ron/patch-1

Create win_alert_enable_weak_encryption.yml

rules/windows/builtin/win_alert_enable_weak_encryption.yml

@@ -0,0 +1,23 @@
+title: Detects Enabling of Weak Encryption and Kerberoast
+description: Detects scenario where weak encryption is enabled for a user profile which could be used for hash/password cracking.
+reference: 
+    - https://adsecurity.org/?p=2053
+    - https://www.harmj0y.net/blog/activedirectory/roasting-as-reps/
+author: @neu5ron
+logsource:
+    product: windows
+    service: security
+    description: 'Requirements: Audit Policy : Account Management > Audit User Account Management, Group Policy : Computer Configuration\Windows Settings\Security Settings\Advanced Audit Policy Configuration\Audit Policies\Account Management\Audit User Account Management'
+detection:
+    selection:
+        EventID: 4738
+    keywords:
+        - 'DES'
+        - 'Preauth'
+        - 'Encrypted'
+    filters:
+        - 'Enabled'
+    condition: selection and keywords and filters
+falsepositives: 
+    - Unknown
+level: high