Malicious Office (OLE) / .XLS — malware analysis report

Static analysis result for SHA-256 eb15ddf938e56317…

MALICIOUS

Office (OLE) / .XLS

1.62 MB Created: 2010-02-09 01:29:42 Authoring application: Microsoft Excel
MD5: 8783e1af670e9bb77c8bf7dab2d2657c SHA-1: f4ba4e188b65dc939dac80eecef03406e3acd172 SHA-256: eb15ddf938e563172721c8f2a21731d6750b7a0e4aa023c86987ef22f3b1e8dd
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The critical heuristic firing indicates this is a legacy Excel formula macro virus, specifically identified as 'XF.Classic' and associated with 'Poppy by VicodinES' and 'The Narkotic Network 1998'. The DOC BODY confirms this, explicitly stating 'An Excel Formula Macro Virus (XF.Classic)' and 'Classic.Poppy by VicodinES'. The script's intent is to infect other workbooks, saving the infected file as 'Book1.xls'.

Heuristics 1

  • 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.

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