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

Static analysis result for SHA-256 41780b77f16e752e…

MALICIOUS

Office (OLE) / .XLS

400.0 KB Created: 2010-06-17 02:13:32 Authoring application: Microsoft Excel
MD5: 783d8a1fe1c36de9ad669a9c358bdcee SHA-1: f87461e6d0422fb60125ac4c996891c98eeb9db4 SHA-256: 41780b77f16e752e417e789602c8459d7e831b38b1f3896d3ef9d0c97b35bb56
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The file is an Excel spreadsheet containing legacy macro virus markers, specifically identifying it as a potential 'Poppy by VicodinES' variant. The document body presents a list of names and addresses, suggesting a lure for a social engineering or phishing campaign. The presence of XLM macro sheet markers indicates the use of older Excel macro technology.

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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