Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 47ee0cea1dfb9fb7…

MALICIOUS

Office (OLE)

163.0 KB Created: 2015-07-25 05:45:46 Authoring application: Microsoft Excel First seen: 2015-09-24
MD5: 6ad6754082e681f34f776e0a5efb2410 SHA-1: fa9444f9d8afb3a9d0f1900f2d83c6f76bed66f8 SHA-256: 47ee0cea1dfb9fb7fa218fbc0da101241fc33876391239d437d2ebf789d2ba6e
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The critical heuristic 'OLE_XLS_FORMULA_MACRO_VIRUS' and the medium heuristic 'OLE_XLM_AUTOOPEN' indicate the presence of legacy Excel 4.0 macros. The document body contains strings related to macro viruses and suggests actions like infecting workbooks and saving them as 'Book1.xls', pointing towards a macro-based infection and potential payload delivery.

Heuristics 2

  • 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.
  • 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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