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

Static analysis result for SHA-256 5e503e46cd5a74c7…

MALICIOUS

Office (OLE) / .XLS

1.51 MB Created: 2009-01-02 16:06:10 Authoring application: Microsoft Excel
MD5: f9b86f00d4dfd7ba601b33d66ff6faf6 SHA-1: 547e1c6fc8efb0bb3a6118709208ecacd8c6bb25 SHA-256: 5e503e46cd5a74c71b9fc604fce99b1da20f4946f7805dfe29075a3c132887e1
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The critical heuristic firing indicates the presence of a legacy Excel Formula Macro Virus marker, specifically mentioning 'Poppy by VicodinES' and 'Narkotic Network'. The presence of XLM macros (OLE_XLM_AUTOOPEN) suggests an attempt to execute arbitrary code. The document body contains what appears to be structural data for steel and bolts, which is likely a lure or obfuscation for the macro execution.

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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