Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 f6ea4cbee0143744…

MALICIOUS

Office (OOXML)

44.6 KB Created: 2014-12-08 13:20:00 UTC Authoring application: Microsoft Office Word 14.0000
MD5: 9e5f8f1d3e96bacaecaba0e1db3cdd4b SHA-1: b520a0ee96992d1e85ee6de87c83de61bcc009e7 SHA-256: f6ea4cbee0143744b0c0de1b94002a2a6fd5ba657c70c4d43453959c93dea42a
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample contains an embedded OLE object that is flagged as a likely exploit for CVE-2026-21514. This object contains a VBScript payload designed to download and execute a second-stage script from the provided URL. The document body attempts to lure the user into clicking the embedded object by claiming it is for tracking IT assets.

Heuristics 5

  • OOXML Ole10Native with payload/link indicators — possible CVE-2026-21514 high CVE likely CVE_2026_21514
    Office document contains embedded OLE (word/embeddings/oleObject1.bin) with Ole10Native plus executable, PE, or risky remote-link indicators. This is a likely CVE-2026-21514 exploitation shape.
  • 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.
  • 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/word/2010/wordprocessingCanvas
    • http://schemas.openxmlformats.org/markup-compatibility/2006
    • http://schemas.openxmlformats.org/officeDocument/2006/relationships
    • http://schemas.openxmlformats.org/officeDocument/2006/math
    • http://schemas.microsoft.com/office/word/2010/wordprocessingDrawing
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing
    • http://schemas.openxmlformats.org/wordprocessingml/2006/main
    • http://schemas.microsoft.com/office/word/2010/wordml
    • http://schemas.microsoft.com/office/word/2010/wordprocessingGroup
    • http://schemas.microsoft.com/office/word/2010/wordprocessingInk
    • http://schemas.microsoft.com/office/word/2006/wordml
    • http://schemas.microsoft.com/office/word/2010/wordprocessingShape
    • https://ec2-54-89-63-117.compute-1.amazonaws.com/uk/drop1/bccde6bb-a68c-4c48-8d51-a3c025be7fcb

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin
8e4dad723a7e04eb62de26912f643d8081dcaf3e683e788aba94c97f9f63cd90		 ooxml-ole-object OOXML embedded OLE part: word/embeddings/oleObject1.bin 3584 bytes
ooxml_oleobject_00_ole10native_00.bin
6f662fc707c92233ad9e9d64327db174ede4cff8cc164d9db54f6cef7cbd934e		 ole-package OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native 1241 bytes
emf_00.emf
32b021eb3e7d7c2ca2b2c0963b721b4bdbed78de052a9d00dfa096f40f68f2c5		 ooxml-emf OOXML EMF part: word/media/image1.emf 5048 bytes

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