Merge pull request #1093 from SanWieb/OSCD_regini

[OSCD] regini LOLBAS

rules/windows/process_creation/win_regini.yml

@@ -0,0 +1,28 @@
+title: Modifies the Registry From a File
+id: 5f60740a-f57b-4e76-82a1-15b6ff2cb134
+status: experimental
+description: Detects the execution of regini.exe which can be used to modify registry keys, the changes are imported from one or more text files.
+references:
+    - https://github.com/LOLBAS-Project/LOLBAS/blob/master/yml/OSBinaries/Regini.yml
+    - https://gist.github.com/api0cradle/cdd2d0d0ec9abb686f0e89306e277b8f
+    - https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/regini
+tags:
+    - attack.t1112
+    - attack.defense_evasion
+author: Eli Salem, Sander Wiebing, oscd.community
+date: 2020/10/08
+logsource:
+    category: process_creation
+    product: windows
+detection:
+    selection:
+        Image|endswith: '\regini.exe'
+    filter:
+        CommandLine|re: ':[^ \\]' # to avoid intersection with ADS rule
+    condition: selection and not filter
+fieds:
+    - ParentImage
+    - CommandLine
+falsepositives:
+    - Legitimate modification of keys
+level: low

rules/windows/process_creation/win_regini_ads.yml

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+title: Modifies the Registry From a ADS
+id: 77946e79-97f1-45a2-84b4-f37b5c0d8682
+status: experimental
+description: Detects the import of an alternate data stream with regini.exe, regini.exe can be used to modify registry keys.
+references:
+    - https://github.com/LOLBAS-Project/LOLBAS/blob/master/yml/OSBinaries/Regini.yml
+    - https://gist.github.com/api0cradle/cdd2d0d0ec9abb686f0e89306e277b8f
+    - https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/regini
+tags:
+    - attack.t1112
+    - attack.defense_evasion
+author: Eli Salem, Sander Wiebing, oscd.community
+date: 2020/10/12
+logsource:
+    category: process_creation
+    product: windows
+detection:
+    selection:
+        Image|endswith: '\regini.exe'
+        CommandLine|re: ':[^ \\]'
+    condition: selection
+fieds:
+    - ParentImage
+    - CommandLine
+falsepositives:
+    - Unknown
+level: high