Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 a1f3a8b0bd4352f1…

MALICIOUS

Office (OLE)

142.5 KB Created: 1996-12-17 01:32:42 Authoring application: Microsoft Excel First seen: 2014-06-27
MD5: 3e7074760b0bffe04a19e9891061cbb6 SHA-1: 3b0f725649543077a413e00e3cdd12acef0e380d SHA-256: a1f3a8b0bd4352f1fb6db04eabf1fdac11c95cfd1137af4f0b4103cdd421c3f1
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample contains critical heuristic firings indicating it is a legacy Excel Formula Macro Virus (XF.Classic), also known as Poppy. The embedded text explicitly mentions infection routines and a payload reference to "Hydrocodone/APAP 10-650 For Your Computer". The presence of XLM macro sheet markers and the mention of infecting Book1.xls suggest an attempt to spread and execute malicious code.

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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