Malicious Office (OLE) — malware analysis report

Heuristics 6

• CVE-2007-3899 — Microsoft Word malformed string memory corruption critical CVE likely CVE_2007_3899
  Word OLE document has the MS07-060 malformed-string exploit shape: a Word 97-family FIB points to a malformed DOP/string-table region with an abnormal INT_MAX run, inflated text counters, and exploit payload or Mdropper.Z campaign evidence.
• Embedded PE executable critical OLE_EMBEDDED_EXE
  MZ/PE header found inside document — possible embedded executable
• Ole10Native package payload is a download-and-execute script critical OFFICE_PACKAGE_SCRIPT_DROPPER
  The OLE Package's embedded payload contains a script that hosts a shell (PowerShell/WScript/mshta), fetches a remote resource, and executes it — a download-and-run dropper. Embedding such a script inside an Office document via the Object Packager is a direct user-execution delivery technique (MITRE T1204.002), not a benign attachment.
• Ole10Native package drops an auto-executable payload critical OFFICE_PACKAGE_RISKY_FILE
  OLE Package displayName or fullPath ends in a directly auto-executable extension (a runnable binary or a script the default shell host runs on double-click). Embedding such a payload inside an Office document has no benign authoring use — it is a malware-delivery dropper.
• Reference to ShellExecute API high SC_STR_SHELLEXEC
  Reference to ShellExecute API
• 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/SMI/2005/WindowsSettings Embedded OLE package script

  • http://schemas.openxmlformats.org/drawingml/2006/mainIn document text (OLE body)

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