Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 e026906d254a5342…

MALICIOUS

Office (OLE)

40.0 KB Created: 2006-03-23 01:18:11 Authoring application: Microsoft Excel
MD5: 0f12479fa3fbfe9ba5229110fd7531f3 SHA-1: 34c0dbb520f026827ad810c81211da7267fc5b8d SHA-256: e026906d254a534233e9b5239adad71e71e06323574ebffe243b5b926a46b660
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications T1059.001 PowerShell

The sample is identified as malicious due to the presence of legacy Excel 4.0 (XLM) macros, specifically flagged as 'OLE_XLM_AUTOOPEN' and 'OLE_XLS_FORMULA_MACRO_VIRUS'. The embedded text explicitly mentions 'Classic.Poppy by VicodinES' and 'An Excel Formula Macro Virus (XF.Classic)', indicating a self-replicating or payload-delivery mechanism. The script's intent appears to be infecting other workbooks and saving them as 'Book1.xls', potentially leading to further malicious activity.

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.
  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://schemas.microsoft.com/office/2009/outspace/metadata
    • http://schemas.openxmlformats.org/officeDocument/2006/customXml

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
282961d365317077aec6316ae4ae4ec052c27caccac685de36f8ea08210b6c37		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 10855 bytes

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