Excel 4.0 (XLM) dangerous capability functions

OLE_XLM_DANGEROUS_FN_STATIC

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high OLE_XLM_DANGEROUS_FN_STATIC

What it means

XLM macro sheet references two or more dangerous capability functions (CALL/EXEC/REGISTER/FWRITE/FOPEN).

Why it fires

The download (CALL into URLDownloadToFile), native-code, process-exec (EXEC) and file-write (FWRITE/FOPEN) primitives of an XLM dropper, recovered directly from the BIFF records. Because it does not depend on deobfuscating the full formula chain, it convicts built-in-name and olevba-blind XLM downloaders that otherwise score only as a bare macro sheet.

Other Office heuristics

OLE_VBA_AFFINE_MSI_DOWNLOADER OLE_VBA_AUTOEXEC_FRAGMENTED_SHELL OLE_VBA_DESTRUCTIVE_WORKBOOK_SHUTDOWN OLE_VBA_BIDIRECTIONAL_MACROCOPY_REPLICATION OOXML_BRAND_LINK_MISMATCH_LURE CVE_2016_7262 POLYGLOT_OOXML_REL_COMMAND OLE_RAW_PCODE_CROSS_DOCUMENT_REPLICATION OLE_VBA_CROSS_WORKBOOK_REPLICATION OOXML_XLM_DANGEROUS_FN OFFICE_DEFAULT_PASSWORD_VBA_DROP_EXEC OFFICE_EMBEDDED_SWF EMBEDDED_OFFICE_CHILD_STATIC_TRIAGE OFFICE_EMBEDDED_MACRO_OBJECT OLE_EMBEDDED_EXE OLE_VBA_EMBEDDED_PE_DROPPER OLE_ENCRYPTED_AND_MALFORMED CVE_2017_11882_EQUATION_NATIVE_CMD_RELATED CVE_2017_11882 OLE_EQUATION_OLE10NATIVE_DOWNLOADER OLE_MTEF_NATIVE_CODE_STUB OLE_EQUATION_OLE10NATIVE_SHELLCODE OOXML_XLM_MACRO_IN_WORKSHEET OLE_XLS5_LAROUX_MACRO_VIRUS