Office (OOXML) malware analysis — malicious · 44b652077839db7c

MALICIOUS

Office (OOXML)

48.9 KB Created: 2017-11-27 19:32:00 UTC Authoring application: Microsoft Office Word 14.0000 First seen: 2017-12-09

MD5: 624c1745046a6825335e7cee9b106ee3 SHA-1: 51c354daec658641d68b4caa8b6d184e3d386221 SHA-256: 44b652077839db7c8931deb1e815ff30c1c3fee6014dfa3e9da5eac8b9a2ad8f

110 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The sample is a malicious OOXML document containing embedded OLE objects, one of which is flagged as an auto-executable payload. The document body contains a prompt related to opening an invoice, suggesting a social engineering lure. The presence of embedded OLE objects and the invoice lure strongly indicate a phishing attempt via attachment, likely leading to the execution of a second-stage payload dropped by the OLE package.

Heuristics 5

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 medium 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.
Fake invoice / payment lure low SE_INVOICE_LURE

Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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 6

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	45568 bytes
SHA-256: `b55ea40c3be59704f1b40d5c9093c60198d2409ae56ac475ce185ed00cedf01f`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 shell/COM execution token(s).
`ooxml_oleobject_00_ole10native_00.bin`	ole-package	OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native	42370 bytes
SHA-256: `678e3203c786388895fb478ab74d1d08e92d4171413e986099e398483995035b`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 shell/COM execution token(s).
`ooxml_oleobject_01.bin`	ooxml-ole-object	OOXML embedded OLE part: word/embeddings/oleObject2.bin	45056 bytes
SHA-256: `d57cca32f1356f088d807afeacb2fd08415283a282f458caa69da068aa5118ba`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 shell/COM execution token(s).
`ooxml_oleobject_01_ole10native_00.bin`	ole-package	OOXML word/embeddings/oleObject2.bin Ole10Native stream: Ole10Native	41814 bytes
SHA-256: `572dcf9615dc6994f4413425995b4dc95764d0a5fb6d4cb913f2c336394c4de7`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 shell/COM execution token(s).
`emf_00.emf`	ooxml-emf	OOXML EMF part: word/media/image3.emf	7500 bytes
SHA-256: `cde8061fe4e3b99e1eb894b89ec908d7ba4e5d309dd65ce068fd71a7d30851d7`
`emf_01.emf`	ooxml-emf	OOXML EMF part: word/media/image2.emf	7548 bytes
SHA-256: `0063c741fab4b910d677670b3dfa634f723b7ce44ad4ff24a9df81dab0875f59`

Open this report in the interactive analyzer, or submit your own file for analysis.