Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 8e2759b597b65f2a…

MALICIOUS

Office (OLE)

52.5 KB Created: 2010-06-13 07:05:22 Authoring application: Microsoft Excel
MD5: 9e8f481e0505d1b96dbb108f1914208a SHA-1: 535a53755ae058fc9e198f0d726550b1635b284c SHA-256: 8e2759b597b65f2a53185277d4bc405e26361a956b3162737080d867f898e933
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Service Execution: Visual Basic

The sample is identified as a legacy Excel Formula Macro Virus (XF.Classic) by multiple critical heuristics. The document body contains text related to financial management and personnel, but also includes references to 'Hydrocodone/APAP 10-650 For Your Computer' and 'The Narkotic Network 1998', suggesting a deceptive or malicious intent. The heuristics indicate that the macro attempts to infect other workbooks and save them as 'Book1.xls' in a specific Office startup directory, likely to achieve persistence or spread.

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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