Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 589bc2ddbe25111a…

MALICIOUS

Office (OLE)

594.0 KB Created: 2005-10-08 16:00:03 Authoring application: Microsoft Excel First seen: 2015-09-16
MD5: 12dc0d82a4d5d6226425b9e21a281b00 SHA-1: 17b539107ceb2d427003193c50e11a44bfc4e5fd SHA-256: 589bc2ddbe25111a137854b746beccdbfd2fe288b97ce6625711baef2f450e54
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The critical heuristic firing 'OLE_XLS_FORMULA_MACRO_VIRUS' and the presence of 'Excel Formula Macro Virus', 'XF.Classic', and 'Poppy by VicodinES' within the document body strongly indicate a legacy Excel macro virus. The embedded text suggests the virus's intent is to infect other workbooks, specifically by saving itself as 'Book1.xls' in the XLSTART directory, which is a common technique for macro viruses to achieve persistence and spread.

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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