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

Static analysis result for SHA-256 e86a5f209d401d16…

MALICIOUS

Office (OLE) / .XLS

1.94 MB Created: 2004-05-21 07:18:45 Authoring application: Microsoft Excel
MD5: 9291a16b59d8cca661d61eb438314278 SHA-1: 348bda295eca064ebb61cd8def99177b1e1a8262 SHA-256: e86a5f209d401d1664ad0b0cdb93155fa59aaa1a1f68297476742af35bb0fc5d
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications T1059.001 PowerShell

The sample is an Excel file containing both XLM and VBA macros, with a Workbook_Open macro specifically detected. The presence of these macros indicates an attempt to execute arbitrary code upon opening the document. While no specific malicious URLs or scripts were extracted, the high heuristic confidence and the nature of the detected macros strongly suggest a malicious intent, likely for initial execution or payload delivery.

Heuristics 4

  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_Open macro
  • 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.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
4de848768ac4f425c366208c77e7dd389eb18533d6ceb90105c4691d0049e561		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 147778 bytes

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