OLE_XLS5_LAROUX_MACRO_VIRUS — Excel 5 Laroux/Larou-CV macro virus

critical OLE_XLS5_LAROUX_MACRO_VIRUS

What it means

Legacy Excel workbook contains Laroux/Larou-CV auto-open replication markers.

Why it fires

Laroux-family Excel 5/95 macro viruses infect workbooks by auto-running legacy VBA and copying macro modules into other workbooks. The detector requires a family marker such as laroux, Larou-CV.xls, or big_dork together with auto_open and workbook/module replication strings, so ordinary legacy Excel files and textual references are not enough to trigger it.

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_VBA_XLSTART_WORKBOOK_PERSISTENCE