Malicious Office (OOXML) — malware analysis report

Heuristics 3

• Embedded Office object carries macros critical OFFICE_EMBEDDED_MACRO_OBJECT
  This document embeds a second Office file that itself contains a VBA macro project or an Excel 4.0 (XLM) macro sheet. Hiding a macro-bearing workbook or document inside another document — frequently under an obfuscated, non-standard part name — is a macro-smuggling technique that defeats scanners which only inspect the outer document's macro storage. No benign authoring workflow stages a hidden macro project this way.
• Embedded OLE object medium OOXML_OLE_OBJECT
  Document contains an embedded OLE object
• 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.microsoft.com/office/drawing/2014/chartex In document text (OOXML body / shared strings)

  • http://schemas.openxmlformats.org/markup-compatibility/2006In document text (OOXML body / shared strings)
  • http://purl.oclc.org/ooxml/officeDocument/relationshipsIn document text (OOXML body / shared strings)
  • http://purl.oclc.org/ooxml/officeDocument/mathIn document text (OOXML body / shared strings)
  • http://schemas.microsoft.com/office/word/2010/wordprocessingDrawingIn document text (OOXML body / shared strings)
  • http://purl.oclc.org/ooxml/drawingml/wordprocessingDrawingIn document text (OOXML body / shared strings)
  • http://purl.oclc.org/ooxml/wordprocessingml/mainIn document text (OOXML body / shared strings)
  • http://schemas.microsoft.com/office/word/2010/wordmlIn document text (OOXML body / shared strings)
  • http://schemas.microsoft.com/office/word/2012/wordmlIn document text (OOXML body / shared strings)
  • http://schemas.microsoft.com/office/word/2015/wordml/symexIn document text (OOXML body / shared strings)
  • http://schemas.microsoft.com/office/word/2010/wordprocessingInkIn document text (OOXML body / shared strings)
  • http://schemas.microsoft.com/office/word/2006/wordmlIn document text (OOXML body / shared strings)

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