Malicious Office (OOXML) — malware analysis report

Heuristics 6

• Field QUOTE with ASCII-integer command payload critical OOXML_FIELD_QUOTE_ASCII_PAYLOAD
  QUOTE field in word/document.xml carries a decimal-ASCII byte sequence that decodes to a shell command referencing mshta
• Heap-spray pattern detected high SC_HEAP_SPRAY
  Repeated 0x41 (A) bytes found
  Disassembly hidden — these bytes score as degenerate, not coherent x86 code (single mnemonic 'inc' is 100% of instructions — a sled or padding/filler run, not program logic).
• Word field-chain (SET/REF) co-located with DDE high OOXML_FIELD_SET_REF_CHAINING
  3 SET/REF variable pair(s) co-occur with DDE field(s) in word/document.xml
• Macro/content-enable lure medium SE_ENABLE_LURE
  Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
• DDE field low OOXML_DDE
  DDE (Dynamic Data Exchange) field found in word/document.xml. The command does not reference a known-dangerous executable, but DDE can be abused for code execution.
• 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://download948.mediafire.com/7qhxvpltv4ng/mtpi0vv90zeogpm/default.hta In document text (OOXML body / shared strings)

  • http://schemas.microsoft.com/office/word/2010/wordprocessingCanvasIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/markup-compatibility/2006In document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/officeDocument/2006/relationshipsIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/officeDocument/2006/mathIn document text (OOXML body / shared strings)
  • http://schemas.microsoft.com/office/word/2010/wordprocessingDrawingIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawingIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/wordprocessingml/2006/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/2010/wordprocessingGroupIn 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)
  • http://schemas.microsoft.com/office/word/2010/wordprocessingShapeIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/package/2006/content-typesIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/package/2006/relationshipsIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/officeDocument/2006/relationships/extended-propertiesIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/package/2006/relationships/metadata/core-propertiesIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocumentIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/officeDocument/2006/relationships/fontTableIn document text (OOXML body / shared strings)
  • http://schemas.microsoft.com/office/2007/relationships/stylesWithEffectsIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/officeDocument/2006/relationships/endnotesIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/officeDocument/2006/relationships/stylesIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/officeDocument/2006/relationships/customXmlIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/officeDocument/2006/relationships/footnotesIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/officeDocument/2006/relationships/webSettingsIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/officeDocument/2006/relationships/settingsIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/officeDocument/2006/relationships/themeIn document text (OOXML body / shared strings)
  • https://www.office.com/In document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/drawingml/2006/mainIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/schemaLibrary/2006/mainIn document text (OOXML body / shared strings)
  • http://schemas.microsoft.com/office/wordIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/officeDocument/2006/relationships/customXmlPropsIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/officeDocument/2006/customXmlIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/officeDocument/2006/bibliographyIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/package/2006/metadata/core-propertiesIn document text (OOXML body / shared strings)
  • http://purl.org/dc/elements/1.1/In document text (OOXML body / shared strings)
  • http://purl.org/dc/terms/In document text (OOXML body / shared strings)
  • http://purl.org/dc/dcmitype/In document text (OOXML body / shared strings)
  • http://www.w3.org/2001/XMLSchema-instanceIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/officeDocument/2006/extended-propertiesIn document text (OOXML body / shared strings)
  • http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypesIn document text (OOXML body / shared strings)

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