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theflakes / sigma_to_wazuh

Convert Sigma rules to Wazuh rules
MIT License
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New lexer broke some Sigma logic #3

Closed theflakes closed 3 years ago

theflakes commented 3 years ago

See results of parsing Sigma rule: Malicious PE Execution by Microsoft Visual Studio Debugger

detection: selection: ParentImage|endswith: '\vsjitdebugger.exe' reduction1: ChildImage|endswith: '\vsimmersiveactivatehelper*.exe' reduction2: ChildImage|endswith: '\devenv.exe' condition: selection and not (reduction1 or reduction2)

theflakes commented 3 years ago

Problem was not the lexer but that I wasn't clearing the "all_logic" array in the outer logic builder loop used to ensure duplicate logic isn't used in a rule. Found in "handle_logic_paths" def.