Office (OOXML) malware analysis — malicious · ef30e24b891d3ae1

MALICIOUS

Office (OOXML)

198.5 KB Created: 2020-10-06 07:56:00 UTC Authoring application: Microsoft Office Word 14.0000 First seen: 2020-10-16

MD5: 4b12fa906829a4ebb028b02acdd71306 SHA-1: dd51f084c8ddbb285c3c3ecca3e3509dbbaa6604 SHA-256: ef30e24b891d3ae10e52fe5d6a4a397bc4bddfc2fad7f3f48d9add8833c01a25

84 Risk Score

Heuristics 4

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
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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 In 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)

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`ooxml_oleobject_00.bin`	ooxml-ole-object	OOXML embedded OLE part: word/embeddings/oleObject1.bin	190464 bytes
SHA-256: `b48c4091d6fc67e6bf8e8a13f871db5c2f491451ecc549656cb2d7c44409ccc3`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.97, consistent with packed or encrypted content.
`ooxml_oleobject_00_ole10native_00.bin`	ole-package	OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native	186407 bytes
SHA-256: `d0c87940921c8e2e7eadc50e957ceacf9d356bf647c87a90953f64a9ff884953`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 8.00, consistent with packed or encrypted content.
`ooxml_oleobject_00_ole10native_00_76892668958159862343411733427962362368242949844127.jar`	ole-package-payload	OOXML word/embeddings/oleObject1.bin Ole10Native payload: display_name=76892668958159862343411733427962362368242949844127.jar; full_path=C:\Users\TESTER\AppData\Local\Temp\76892668958159862343411733427962362368242949844127.jar; temp_path=; def_file=	185711 bytes
SHA-256: `cb2f29f888968eb3320ac722a4eaa8e6b384697572567fa9fc9beea0393e6fcf`
`emf_00.emf`	ooxml-emf	OOXML EMF part: word/media/image2.emf	5188 bytes
SHA-256: `1f81d7d6fe7dbd95ab7bcaf1cf42a8815d6dca890477272e31ce5fdb63f6536d`

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