Office (OOXML) malware analysis — malicious · 4202d95c0fb6b94f

MALICIOUS

Office (OOXML)

232.4 KB Created: 2020-10-06 08:02:00 UTC Authoring application: Microsoft Office Word 14.0000 First seen: 2020-10-09

MD5: 00c436955d61a293628674130b2c21ba SHA-1: 864dfa56cda3ebaadc2f463bbcb066b6ee8c018b SHA-256: 4202d95c0fb6b94f6b4162f01242bed9d85ed728ca8282d8fac1cd39823d120e

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	225280 bytes
SHA-256: `8b711776321431e644bac5fa1218353271683ba18ab6b3bab237257574a06662`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.98, consistent with packed or encrypted content.
`ooxml_oleobject_00_ole10native_00.bin`	ole-package	OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native	220726 bytes
SHA-256: `ba3d1f503febb265c0ba1bdd77e05d055b62e7125af69699339cc763c81b94ba`
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_71436716796833838282616877282136911376229453988896.jar`	ole-package-payload	OOXML word/embeddings/oleObject1.bin Ole10Native payload: display_name=71436716796833838282616877282136911376229453988896.jar; full_path=C:\Users\TESTER\AppData\Local\Temp\71436716796833838282616877282136911376229453988896.jar; temp_path=; def_file=	220030 bytes
SHA-256: `1141ee648fd532bb5176ce5f0e2159d8aeeb8ae7884b8c5880d9e59e94f1aeba`
`emf_00.emf`	ooxml-emf	OOXML EMF part: word/media/image2.emf	5132 bytes
SHA-256: `cdcd24cad039b7b74aa303cecbe9a72aa4352b721442b698450fa9d5fb419735`

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