Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 fcf5a266a994bc38…

MALICIOUS

Office (OLE)

78.0 KB Created: 1996-12-17 01:32:42 Authoring application: Microsoft Excel First seen: 2015-10-04
MD5: b51a488f287031ea52433d0d51fd14b3 SHA-1: 9a818f9ada28b30907d408b7e3f8f97058ef0353 SHA-256: fcf5a266a994bc383404ead89c8a06dd65c78a34355198222ab3e54a24c28136
140 Risk Score

Heuristics 3

  • Legacy Excel formula macro virus marker critical OLE_XLS_FORMULA_MACRO_VIRUS
    Workbook stream contains self-identifying legacy Excel formula macro virus markers. This indicates the document carries formula macro virus content even when no VBA project or modern XLM macro-sheet structure is present.
  • Legacy XLM macro-virus family marker critical OLE_XLM_LEGACY_MACRO_VIRUS
    Workbook contains an Excel 4.0 macro sheet and legacy macro-virus family or workbook-replication strings. This is a narrow indicator for infected XLM workbooks rather than ordinary formula use.
  • Excel 4.0 (XLM) macro sheet present medium OLE_XLM_AUTOOPEN
    Workbook contains an Excel 4.0 macro sheet sub-stream — XLM is rarely seen in modern legitimate workbooks and was a major Office malware vector during 2020-2022.

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