Office (OOXML) malware analysis — malicious · 88fad75165fc1742

MALICIOUS

Office (OOXML)

225.9 KB Created: 2021-01-18 17:32:00 UTC Authoring application: Microsoft Office Word 14.0000 First seen: 2021-01-23

MD5: e5cf81dc3b5b4b8f38508874e9b775a5 SHA-1: edef0286271645e9cc0b900df3c22bd8cfb361b8 SHA-256: 88fad75165fc174236239c6560b987ba056ffd41eff63131679d6a367255e282

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	217088 bytes
SHA-256: `9599c4db4eb4668bf1e6904692f54770c35125ebceb4a7c12689d58eb976ecd0`
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	212832 bytes
SHA-256: `a2bd1df118663a4d39d335b3f3e8f50baf961d89b9423d1d3803bc9e1089a509`
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_85315649997673858983841829137547969772821656578155798474875123239698223169841151.jar`	ole-package-payload	OOXML word/embeddings/oleObject1.bin Ole10Native payload: display_name=85315649997673858983841829137547969772821656578155798474875123239698223169841151.jar; full_path=C:\Users\TESTER\AppData\Local\Temp\85315649997673858983841829137547969772821656578155798474875123239698223169841151.jar; temp_path=; def_file=	211866 bytes
SHA-256: `42ec7efa9d0ae7868a89f520ba191ac02b3fc92f2efe4b779bb6732710c4b799`
`emf_00.emf`	ooxml-emf	OOXML EMF part: word/media/image2.emf	5148 bytes
SHA-256: `63a1e8fdfc1b5c22522f1e96caca6501f064ad8d07eb7d9659c5552592572ff0`

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