Malicious Office (OOXML) / .DOC — malware analysis report

Static analysis result for SHA-256 a435e282c8e8778c…

MALICIOUS

Office (OOXML) / .DOC

337.9 KB Created: 2022-08-06 06:06:00 UTC Authoring application: Microsoft Office Word 14.0000 First seen: 2022-08-08
MD5: 2182c43ea3fd405d646e2f123c46c6bf SHA-1: 82e9a03227e74370b6fd17a2008f5dcbab01892e SHA-256: a435e282c8e8778c6f8d693c284ffc7f539dd0f4e1570a5836b76bf8a2ef78fd
84 Risk Score

Malware Insights

MITRE ATT&CK
T1559 Component Object Model Hijacking T1559.001 Component Object Model Hijacking: DLL Side-Loading

The file is a malicious OOXML document containing an embedded OLE object. This object, identified as an Ole10Native package, is flagged as risky because it drops an auto-executable payload, specifically a JAR file. The presence of this embedded object and its payload-dropping capability strongly suggests a malicious intent to execute further stages of an attack.

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
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin
d22d07f4bc2569b83aaa2afa5ff0a56dd3649e078b9fab739c168aec07f40101		 ooxml-ole-object OOXML embedded OLE part: word/embeddings/oleObject1.bin 251904 bytes
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
2167b97cb74ea9c3fc477aee0e10d71e88d573cabe2508d5970e0daebb8d6447		 ole-package OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native 247263 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 8.00, consistent with packed or encrypted content.
emf_00.emf
5dff030930fb257f7e16069526a50532fbe7c0877321a5214d7dacb201a5823f		 ooxml-emf OOXML EMF part: word/media/image3.emf 5464 bytes

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