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

Static analysis result for SHA-256 05b64238bedc094f…

MALICIOUS

Office (OLE) / .XLS

2.08 MB Created: 1996-10-14 23:33:28 Authoring application: Microsoft Excel
MD5: ea6015940af893f6cbcc10811c80c557 SHA-1: db0e629c5f43835243542f183dde2d083986379d SHA-256: 05b64238bedc094fba5d01ab682b5b820c2759db1274cf50c8cf88f3c187852d
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The critical heuristic 'OLE_XLS_FORMULA_MACRO_VIRUS' indicates the presence of a legacy Excel formula macro virus, specifically mentioning 'Poppy by VicodinES' and 'Narkotic Network'. The medium heuristic 'OLE_XLM_AUTOOPEN' confirms the presence of Excel 4.0 (XLM) macros. These indicators strongly suggest the file is designed to execute older forms of malware through its macro capabilities.

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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